starting to feel like a real idiot.  :(   Going to owe you something .  thank you so much.

Error:Unknown property 'OpportunityStandardController.lstEndora' 

<apex:page standardController="Opportunity" extensions="MultiAdd" id="thePage">
    <apex:relatedList list="Opportunities"/>
    <apex:form >
        <style type="text/css">
    .pbTitle {
        white-space: nowrap
             }
        </style>
        <apex:pageBlock title="Procedure Rooms: Quote 1 kiosk or 1 workflow software unit per procedure room.">
            How many total procedure rooms? &nbsp;&nbsp;
            <apex:inputText value="{!Opportunity.Total_Procedure_Rooms__c}"/><p/>
            
            <b>PROCEDURE ROOM/QTY</b><p/>
            ENDORA kiosks #45040-73  &nbsp;&nbsp; 
            <apex:inputText value="{!Opportunity.PR_Qty_Kiosks__c}"/><p/>
            Workflow Software only (customer provides hardware) #ENDO-777 &nbsp;&nbsp;
            <apex:inputText value="{!Opportunity.PR_Qty_WF_SF_Only__c}"/><p/>
         </apex:pageBlock>
        
         <apex:pageBlock title="Travel Carts">
            How many travel carts will track endoscopes? &nbsp;&nbsp;
            <apex:inputText value="{!Opportunity.qty_travel_carts__c}"/><p/>
            <b>TRAVEL CARTS/QTY</b><p/>
            ENDORA kiosks #45040-73  &nbsp;&nbsp; 
            <apex:inputText value="{!Opportunity.tc_qty_endora__c}"/><p/>
            Workflow Software only (customer provides hardware) #ENDO-777 &nbsp;&nbsp;
            <apex:inputText value="{!Opportunity.tc_wf_sf_only__c}"/><p/>
         </apex:pageBlock>
        
        
        <apex:pageBlock title="Kiosk Mounts">
            Kiosk mount total by type for procedure rooms:? &nbsp;&nbsp; <p/>
            <b>KIOSK MOUNTS/QTY</b><p/>
            Flush Wall Mount #72233-847  &nbsp;&nbsp; 
            <apex:inputText value="{!Opportunity.Qty_flush_wall_mount__c}"/><p/>
            Flush Tilt Wall Mount #72233-849 &nbsp;&nbsp;
            <apex:inputText value="{!Opportunity.qty_tilt_wall_mount__c}"/><p/>
            Arm Wall Mount #72233-848  &nbsp;&nbsp; 
            <apex:inputText value="{!Opportunity.qty_arm_wall_mount__c}"/><p/>
            Floor Stand #72233-850 &nbsp;&nbsp;
            <apex:inputText value="{!Opportunity.qty_floor_stand__c}"/><p/>
         </apex:pageBlock>
        
        
        
        <apex:commandbutton value="Add" action="{!Add}" rerender="pb1"/>
        <apex:commandbutton value="Save" action="{!Save}"/>
       

        
      
       
     
        <apex:repeat value="{!lstEndora}" var="e1" id="therepeat">
                <apex:panelGrid columns="5">
                <apex:panelGrid headerClass="Endora">
                    <apex:facet name="header">Del</apex:facet>
                    <apex:commandButton value="X" action="{!Del}" rerender="pb1">
                        <apex:param name="rowToBeDeleted" value="{!e1.recCount}" assignTo="{!selectedRowIndex}"></apex:param>
                    </apex:commandButton>
                    
                </apex:panelGrid>
                <apex:panelGrid title="Cleaning SINKS: Quote 1 kiosk and 1 kiosk mount per solution " >
                    <apex:facet name="header">Department</apex:facet>
                    <apex:selectList value="{!e1.Opportunity_Name__c.Account_Dept__c}" multiselect="false" size="1" required="true">
                    <apex:inputfield value="{!e1.Account_Dept__c}"/>
                </apex:selectList>
                </apex:panelGrid>
                    
                <apex:panelGrid >
                    <apex:facet name="header">Floor/Room#</apex:facet>
                    <apex:inputfield value="{!e1.Floor_Room__c}"/>
                </apex:panelGrid>
                 
                <apex:panelGrid >
                 <apex:facet name="header">Kiosk Quantity</apex:facet>
                    <apex:inputfield value="{!e1.Kiosk_Qty__c}"/>
                </apex:panelGrid>
                    
                    
                <apex:panelGrid >
                 <apex:facet name="header">Mount Type</apex:facet>
                    <apex:selectList value="{!e1.Mount_Type__c}" multiselect="false" size="1" required="true">
                    <apex:inputfield value="{!e1.Mount_Type__c}"/>
                </apex:selectList>
                </apex:panelGrid>
              
                    
                <apex:panelGrid >
                 <apex:facet name="header">Mount Quantity</apex:facet>
                    <apex:inputfield value="{!e1.Mount_Qty__c}"/>
                </apex:panelGrid>
                
           
            </apex:panelgrid>
        </apex:repeat>
       
      </apex:form> 
</apex:page>

Class:
public class MultiAdd
{
    //will hold the account records to be saved
    public List<Endora_Information__c> lstAcct = new List<Endora_Information__c>();

    //list of the inner class

    public List<innerClass> lstInner

    {get;set;}

    //will indicate the row to be deleted

    public String selectedRowIndex
    {get;set;} 
    //no. of rows added/records in the inner class list
    public Integer count = 1;
    //{get;set;}

    ////save the records by adding the elements in the inner class list to lstAcct,return to the same page

    public PageReference Save()

    {
        PageReference pr = new PageReference('/apex/MultiAdd');
        for(Integer j = 0;j<lstInner.size();j++)
        {
            lstAcct.add(lstInner[j].endora);
        }
        insert lstAcct;
        pr.setRedirect(True);
        return pr;

    }

    //add one more row

    public void Add()

    {  

        count = count+1;

        addMore();     

    }

    /*Begin addMore*/

    public void addMore()

    {

        //call to the iner class constructor

        innerClass objInnerClass = new innerClass(count);

        //add the record to the inner class list
        lstInner.add(objInnerClass);   
        system.debug('lstInner---->'+lstInner);           

    }/* end addMore*/

    /* begin delete */

    public void Del()

    {

        system.debug('selected row index---->'+selectedRowIndex);
        lstInner.remove(Integer.valueOf(selectedRowIndex)-1);
        count = count - 1;

    }/*End del*/

    /*Constructor*/

    public MultiAdd(ApexPages.StandardController ctlr)

    {

        lstInner = new List<innerClass>();

        addMore();

        selectedRowIndex = '0';

    }/*End Constructor*/

    /*Inner Class*/

    public class innerClass

    {      

        /*recCount acts as a index for a row. This will be helpful to identify the row to be deleted */

        public String recCount

        {get;set;}

        public Endora_Information__c endora

        {get;set;}

        /*Inner Class Constructor*/

        public innerClass(Integer intCount)

        {

            recCount = String.valueOf(intCount);       

            /*create a new account*/

            endora = new Endora_Information__c();

        }/*End Inner class Constructor*/   

    }
}
    /*End inner Class*/