I got a great deal on my 2002 pro x, but most of the trails around here are very narrow and windy. I'd like to 'tweak' it just a bit by lowering the primary clutch engagement rpm from 4500 to say, 3800-4000. Does this make sense, or is there something else I should be looking at? I should say that I don't overly care about 'ram-head' performance, although I don't want to overly affect performance either. Suggestions?? Thanks in advance.