Sigh...I miss the aluminum sliding rails...never use them, just like the functionality of it...

I know which piece you were speaking of, just couldnt find it on the diagram. As you well know, this piece is 'free floating' and should never see any forces during normal operation. Shifting loads in the back or heavy objects when open can crack it- then when you open it they can get worse.

Good luck with the CPO. Unless I was 110% sure it was covered, there is no way I'd sign any kind of work order to have the dealer 'look into it'. $100, done. Do it over the internet and never have to drive to and from the dealership. For me, avoiding a trip to the dealer is worth hundreds....