I can speak first hand about this... not only will certain things just "not work", some things you wont find for several trips.
Pat and his team did an incredible job getting my 911 in shape, but there were still issues that I found over the first few trips... So far, everyone of these will be (and is being) taken care of under warrenty.
All except the faded carpet, of course!
Make sure you have, from the dealer, a clear (and in writing) understanding of what will and won't be covered under tracker (and the dealers) warrantys.
If your buying it from out of town, and intend to take it to a local dealer for service (after the sale), do a courtesy call to the local dealer first... it'll help pave the way for the things you need done.
I couldn't be happier with the deal that I got.