Well I just tried it on the other two tubes (it's built for 4 carbs.) seems to be less finicky. The reason I'm ballancing them, aside from the obvious, is that it seems to be rough under throttle. Usually I thought this was due to the carbs being out of sync with eachother. But maybe not? Any other ideas guys? Doesn't quite "chatter" under throttle load... but it does seems to vibrate more. I could just be super sensative to everything since all the mods, but I'd like to get an idea of it's normal.