For those of you who have a 426. How many turns out on your acceleration pump timing adjustment screw? Here is the story: WR426 below 2000' and riding at temps between 40 and 85 most of the time. FMF PC4 Yz timed air lid removed I run 92 octane fuel Since I'm jetting with stock FCR jets, JD suggested 48 pj, DQR needle clip pos #4 or 5, 170 mj and all the rest is stock. The bike pulls very hard everywhere but I have a bog as soon as I "gun" the throttle As I read and ask on TT, many suggested that the problem was coming from my acc pump. I checked it out. The acceleration pump timing adjustment screw was 5 1/2 turn out (the more you turn out, the less delay you have). I noticed that at this position, the slide was not clearing the hole from where the squirt occurs at the precise moment the pump actually squirts. The squirt probably partly land on the slide creating a lean bug. I decided to put the screw at 2 turns out so that the squirt occurs when the slide is half way up. The bike fired like a charm but I only created a bigger problem. I suspect that now the delay is too big (the squirt occurs only at half throttle which might not be soon enough) creating a lean bug again. I plan on adjusting the screw so that the pump starts to work right after the slide has cleared the little hole from where the squirt comes. Does this all make sense to you? I'd like to hear your setting suggestions. Hence my first question: For those of you who have a 426. How many turns out on your acceleration pump timing adjustment screw? Thank you very much for your help.