I have a 05 F5 firecat with a stock primary spring (yellow). it is not the origianl, the original spring broke and we replaced it with this one. The sled seems to pick up around 4700 RMP's. which really isn't too bad, but it seems to catch a little too high, and is tought when your riding in the woods. My question is, what should it normally pick up at? and if so, is their a way to adjust the primary clutch? i read that around 4000RMP's is normal to pick up on. Help?!