hey guys i just got my 2005 summit back up and going last week. i rode with my buddy who has a 07 800r. both sleds are 144`s and his abosolutely kills mine in all conditions. his has a full spi exhaust and mine has just a spi pipe and stock muffler. r these sled that much different in hp. i was thinkin my clutches are getting tired and need to be gone through?