my 06' 250 XC doesn't seem to be running like it should. It is not wanting to fully rev out on the top end. I suspected reeds and had a look, one has a slight gap (less than 1/16"). tried flipping it over to no avail. dealer says replacement reeds won't be in until late august (&%$#@!?). I am not 100% certain this is the issue. It also seems to have more vibration than normal. the pipe definitely has a significant vibration about mid throttle. I can not determine the cause. I thought the bike was running lean and jetted it with 40 pilot, 170 main, and needle (stock) 4th clip, but this seemed to make it worse so put it back to stock jetting of 35 pilot, 165 main, and 4th clip (this is what the manual specifies for my current elevation and temperature). runs better but still seems a bit off. looking for suggestions.