Chainring wobble
Hi.
I have a bike that I'm trying to sell but it needs some work. The main thing I noticed was that the chainring wobbles and at one point the chain rubs against the chain cage when it's on the largest ring. Looking at the chainring I can't see any bending but I'll have to re-check. If I pull on the crank it doesn't feel like it's loose. I'm trying to find out what the problem is and where I should be looking. It's a Truvativ crankset (bike is probably around 5 years old looking at the model). I don't know anything about the history of the bike.
Any help will be appreciated.