serious kickback / bent kickstarter

[Visegrippe]

anyways, went to start the bike yesterday, after straitening out the kickstart lever, and couldn't get the darn thing to start, usually it'll start after a few good kicks, with just the occasional kick back.

would do nothing but kick back, bad enough to bend the kick start lever. (and i have a very sore foot).

didn't break my leg, but probably came pretty close.

why would it suddendly do this? haven't changed anything since last week when i had it running.

it's usually advanced timing that makes it kick back, right?
would a weak battery contribute?
too much gas? (kill switch is finicky, so was kicking it with no spark for a while).

any more ideas?'

thanks

 

[Tech7]

Does your bike have mechanical advance? Could be stuck.