VB.NET bindingsource.find not working

This is a second part to https://www.experts-exchange.com/questions/26616925/OPening-a-form-and-passing-data-from-datagrid-in-VB-NET.html?anchorAnswerId=34147039#a34147039

I have a form that opens with a bindingsource on it and I want to set it to a particular record.  In the form, I have the following:
 

Public Sub New(ByVal idNum As Integer)
        InitializeComponent()
        Debug.WriteLine("ID passed = " & idNum)
        Dim row As Integer
        row = CustomerTBLBindingSource.Find("CustomerID", row)        
        Debug.WriteLine("Index=" & row)
        If row <> -1 Then
            CustomerTBLBindingSource.Position = row
        End If

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I can't get the find to work for the life of me!  The table has 3 records with CustomerIDs of 1,2 and 3.  The field is set to the primary key with a value of int.  I even tried:

    row = CustomerTBLBindingSource.Find("LastName", "Bob")

Where one of the records has Bob for the LastName, but it always returns an index of -1.  I have found all kinds of examples identical to this and they seem to work for everyone else.  Any ideas what's wrong or how I can debug it?