Dealing with dealer advice?

[husker boxster]

I know you say the dealer says it covered under warranty, but you can't always believe them. I forgot if it was the rear wheel bearing or the front bushing repair on my previous Box but the dealer said the repair was covered under my CPO. They gave me the car back, no charge, and I was on my way. A week later they sheepishly contacted me and said Porsche rejected the warranty claim because it was considered a wear / tear item and I owed them for the repair. They only charged me at the warranty rate since it was their mistake, but it still cost me. Might want to be absolutely, positively sure if you go in demanding a new top. Not that this is a wear / tear item, but there could be some debate on how it got disconnected.