Did the jetting on my friends wifes TTR 125L last night... wow! I mean WOW WOW WOW! What a different. Went to a 110 main and a 17.5 pilot, did a little airscrew work and adjusted the idle, and its almost perfect. I might have to go back and move the needle up one clip position, still got that annoying stumble. I thought the pilot would have cleaned that up completely, but I guess not. But its running amazing... warms up quicker, and pulls much stronger, especially on the top. If you have a TTR125, and you want the biggest gain in preformance with the least investment, jet it! Really, $5 and 15 minutes work, and yes, anybody can do the work, is deffinatly worth you time and money. Hardest part is finding somebody with those litte itty bitty jets. Going to ride it this weekend... I no longer have a bike I can call my own... :ugg: Mabye again some day...