I have a 06 drz-400s, full yosh rs-3 exaust, 3x3, and now a fcr 39mm pre 04 drz-e carb. My problem is with the accelerator pump. I've read all the info about it and I'm still stumped. The duration of the fuel squirt is in the 4 second range. I've heard that the crf-450f diaphram is a solution to this problem, possibly it has a longer pin that decreases the duration? What if you put a shim under the current pin in the bottom of the AP? Just looking for more info. This is all sea level. Any other sugestions are welcome. thanks, first post!