After riding a local woods race this past weekend, I have found I am much faster in the very tight, wooded snake trails than the 2-stroke, 250cc's. I push em hard in the tight stuff and they often spill allowing a chance to pass. Otherwise it is hard passing on these single track wooded trails. The problem is when we hit a small opening their 2-stroke, 250cc's are quicker to accelerate and I lose the opportunity to pass as they get a 30 foot headstart. What can I do to get the WR450 to get more snap, coming off the low end. I have done all the free mods. Has anyone gone to a 52 rear sprocket?