Does trek have any history of problems with their carbon? I took my bike in for service and they found a crack in the non drive seat stay, 4 or 5 inches up from the hub, on the forward face of the tube. I haven’t wrecked. Also, the manager tried to tell some strange things, not the least of which was that the damage could have been done by the peddle of my commuter while hanging on the rack on the way to the store (two inches lower at contactin the store!!). Help!!