Probably a long shot, but here it goes. I bought this used years ago.
My motor is a esr 310 that is drag ported by Nate McCoy. It has LRD pipe and LED spark arrested silencer, stock ignition, vf3's, fuel customs intake, 39mm carb. Last time I took it out it was blubbery and it'd fall on its face from mid 3rd to early 4th gear then seem to clean out. That was with my old intake set up, now I just added the fci. Currently has 180 main,52 pilot and dgh needle at 3rd slot from the bottom. It's been a few years since I've ridden it and I do remember it didn't like to idle for very long. I was thinking maybe the pilot was to small.
I need to order more jets this week, so if anyone has any idea that would be great. Thanks