there is a few things done to my sled, and my tach is not working. i had a guy tell me it sounds like its bouncing off the rev limiter.its does it all day long untill i find some deep powder with a real good load than i quits. there is a spring in it equivilent to the stock xp spring, i believe its purple/blue. and i have a light pin weight kit. my gear ratio is 2.44. should i just put the next step pin weight kit in or should i mess with the spring too? and there seems like there is too much heat on the primary also. any help would be awesome. thanks.