I've cleaned all of that crap like ten times. I've also adjusted the needle to where it's performing the best. I've tried letting the thing run a bit without the airbox and that doesn't make it go faster. I've tried staring at it for five reps of ten minutes, that doesn't do anything.
It bogs at full throttle. No matter what. I can go right from idle to full throttle and it bogs, or I can ease into full throttle and then it bogs. If it starts to bog all I have to do is let it off slightly so it's not at full and then it picks back up again. Regardless, it really affects the thing's top speed.
It seems like it's something going on in the carb but I'll be damned if I know what's going on.