Fisher originally offered the Cake 2 - 4 DLX bikes with 8" front rotors. They've recently switched these models to 6" rotors, supposedly because of excessive stress on the hubs, skewers, etc. The Cake I DLX has stronger hubs/axles and is not being changed to 6" rotors. They've offered to change mine under warranty, but since I'm not an extreme rider, wonder if this is necessary for average riders. Has anyone had any problems that were related to the larger rotors? Thanks.