Has anyone tried using a geared belt in place of the drive chain? I'm really fed up with the headaches from these chains and sprockets. Of the whole assembly, that is by far the most troublesome. There has got to be better way. I was just looking at my lawn tractor. It has a 500cc engine and there is only belts driving both the wheels and the cutting deck. The belts aren't even toothed, or the pulleys. Why would that work on these bikes?