Hello, I uncorked my xr650r two weeks ago (everything except pipe which is on backorder) and rode it that weekend without any issues. Tons of power - real scary sometimes. Yesterday I installed a trailtech computer and took it out for a spin - bike was hesitating at the barest turn of the throttle but even worse it was stuttering at constant speed. I'm open to suggestions on where to look. I'm using a 175, a 68S and a jet needle set. The parts were bought on ebay (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=4540129139&category=35597) Thanks for any assistance!