Riding the same carbon fiber road frame for about 10 years now, with about 80% time on my Wahoo trainer. I have just recently noticed that my inner chainring is chewing into the chainstay. There is about .75cm clearance between the two, and this type 'rubbing' has never happened before. Its bad enough to have gouged a good 10mm x 2mm divet. My question is why now after 10 years?? The BB itself seems stable, no noticeable play in it, and all bolts in the crankset are fine. Can CF fail after years of riding? I plan to take it in to the LBS, but curious if others have had similar issues. Thanks