Just taking my clutches apart to get the sled ready for summer (it comes too early in Minn-no-snow-duh) and I noticed my belt was pitted with frayed cords on the outside (side away from the motor) of the belt. No marks or anything on the clutches. I believe this means that my secondary should be shimmed out (away from the engine) but I want to make sure I am correct. I only have one shim left in the secondary so if I need to go in any more I am SOL. Sled is an 05 M7 141, belt is the carlise XS817, secondary cut to 10.4", Shift assist, Goodwin Blue spring, cutler adjustable weights (68'ish g's), yellow/white primary spring. Sled pulls 7900 and holds it and pulls hard - no complaints. Thanks for the help, if any questions, let me know. Paul