nice industrial bike. i have had a few chainring problems like you described with this one, and i either trued up the chainring (cuz it got bent somehow, and thats all it takes) or slapped on a new one. it looks like a schwinn heavy duty, but i just can't bring myself to put schwinn and made in taiwan in the same sentence (although.. i just did). now all i need is a heavy duty lookin basket like that for my commuter.