i have a 2004 xc 700 and i am wondering about the e-clip position. Stock is in the third position,and i was wonderin how safe it would be to move them to the second position? also there is a set of slp shims to give half postions, which i am interested in for safety. my sled has det and it has not yet flashed on me. one of my friends told me that with that he would be real aggressive with jetting. i have jetted down to 430 and stock was 440. i am also wondering it i gear it to 23:41 (stock is 25:41) do i need to change the length of the chain. also interested in some good clutching advice or ideas. one more thing, my sled now has just under 1500 miles and the rubber on the middle of teh track is starting to peel off to teh canvas. i have always rode on good snow, so i was wondering if it is possible it could be rotting.