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.
2007 KTM 950 SM | 2001 BMW R1150GS
1991 Suzuki Bandit 400 | 2008 Gas Gas TXT300 Raga