Cartman42 Shortly after my post Trek took both bikes back and refunded our money. (One of the reason why I purchased Trek again and probably will in the future). It was just getting really bad. We have small granite gravel in NW and it was just the perfect storm. I was not going to be stuck with bikes that will just shred themselves eventually. We purchased the aluminum Checkpoints AL5's and we are loving them. Yea the ride is not as smooth but the durability is there. After year of grave riding only there is not a scratch on them. Okay they need wash but other than that they are like new We changed the wheels for GRX. We love the frames so much we will update to GRX groupset when it become available again for more gearing. The 105 groupset is great but we live in the mountains we need gears. If Trek would not take them back, my idea was to put thinner stainless steel selfadhisive sheet metal between the frame and the crank. It would provide some protection to the carbon fiber frame around the bracket. Or just upgrade to GRX. The new SL5's have GRX have like 10 mm gap between the crank and the frame. I am sure SRAM have similar product.