I was getting beat by raptors in a race by a bike length or sometimes two. Put in twin air filter and changed the primary spring to the red on from EPI 35/125 its 3' long.I beat two raptors today both had pipes one had filter and jets.I would get them from one up to three bike lengths everytime.The place we raced was about 200 yards maybe 250.I have the polaris 35/140 spring ordered,but it didn't come in.So I put in the spring from a 650-p clutch kit that I haven't installed yet.I might be able to beat them worse when I get the other spring?