Who has changed their PAJ? I have been reading flat out about PJ to PAJ relationship, seems that Taffy's old info is the only info that is really available anywhere. His chart is basically: PJ - PAJ 38 - 60 40 - 70/75 42 - 85/90 45 - 100 48 - 110 to 125. The YZ450's come with a 100 PAJ and 45 PJ, our WR450's come with a 45 PJ also but with only a 80 PAJ. Is this to do with ACV crap again? I originally thought I was too big with the 80 PAJ, but I realize too small now. Basically what I understand now is the bigger the PAJ, the more fuel the PJ will flow. I have to use a 52 pilot jet to have correct pilot circuit, but I wonder about getting big PAJ will change much? I will have to wait and see. Clark, I read some old posts, you had an improvement going bigger PAJ didn't you?