For some reason my chain is rubbing on my centerstand. When i got the bike, it was a little bent inward from a previous stack. I've tightened the chain a bit, it was clearing, but i think my chain stretched a bit more and it's rubbing again. Anyway, i don't want to just tighten and stretch my chain. I need to bend the centerstand outwards slightly, but i don't have the tools to do it. I'd just need an oxywelder to heat the metal slightly and bend it. take 5 minutes. but i don't know anyone who's able to do that. Can anyone assist?