I just installed jd kit (170 mj, red needle 3rd clip, 48 pilot) and zip-ty fuel screw. I've done all the free mods and put on a white bros. e2 silencer. I'm getting a hesitation from about 1/4 to 1/2 throttle. It feels like the engine is running rough in this range. Also, hear little "burps" or "blips" when idling coming from air box. Any suggestions?