I've never had a problem starting mine, but I do the fuel-on, lean-til-it-dribbles, put-in-gear-and-rock-back-and-forth trick on all open 2 strokes. They seem to like that routine. 2nd kick every time, but it is carburetted oh so perfectly so that definitely helps too.
I'd suggest running race gas if you're in the States. These bikes really appreciate it.
Choose your fuel type and stick with it, then jet for about 90:1. Happy bike.
If you figure out how to get yours to stop overheating or breaking the clutch shaft selector hat thing, let me know. Or, I guess I could stop crashing the bike into piles of rocks.
"If you don't like my riding, get the hell off the sidewalk"