I have a Foreman 500 and upon all the hype, I cut my spring. I have riddin my Foreman now quite a bit and cannot see any improvement or change since cutting my spring. Cut the 13 rounds from spring or just about half and no noticable difference in throttle control or any other change. Can't say it hurt anything, but wish now I would have just left alone, but coudn't stand it with all the comments on big changes others noticed or wanted it to change anyway. Oh well, no harm I hope. btw, I live just a few feet above sea level.