This morning I went to crank my bike(400e with sm wheels), to go to work, it cranked fine. Long story short I was sitting on it with kickstand down. Forgot it was in gear, released the clutch (to put my helmet on) and it went lunged almost threw me off and went dead. After that, all it would do was turn over and backfire out the tail pipe, but would never start. Kinda sounded like a timing backfire and not a fuel related one, but I had to quit messing with it to go to work. What do y'all think?