1. In your Object Repository (OR) spy on all three objects on your web page see if there is anything in their properties that distinguishes them and sets them apart and makes them unique. If so, then make sure that property is added to the objects in your OR. I would start with looking at the RO properties vs. the TO properties.
2. See if each object has an ordinal or creation time value associated with it. You may be able to use that as well.
3. Another option is to use Descriptive Programming. There is a lot of information on that here in the forum and in the QTP help file.