Thanks thumpertalkers for all the riding and mod tips ... the bike is much more fun with your help! Hey - anybody have any experience with the ttr 90 - the 426 goes much better with a few free modifications - does anybody know about the 90? Also, was at the local shop today thinking new exaust might add a little pep. The pro circuit system is $250, the FMF $150 - got prices up to $500! Why would I spend the extra $100 on the Pro Circuit or more for something else, how much difference can there be? The parts guy says surf the net and see if can get some feedback. I can't imagine a better place to ask the questions than thumpertalk! Thanks guys!