I'm at my wits end with my kick starter. The pin the holds the lever on the collar of the kickstarter shaft keeps giving out. It keeps denting, or chipping and then failing when I kick the engine over, falling off usually. Where can I get a better pin? Or a harder one? There are no threads inside the hole where the pin goes, so my guess is someone drilled it out, but the hole is tapered so maybe not. Any guesses?