After putting about 4 hours on my new bike, I started hearing a racket coming from the chain on my bike. My wife helped me narrow it down to the chain rubbing against my front guard. I took the bike back to the shop where I bought it, and the "fix" was to shave out the guard. Four hours of riding later, the problem creeped back. My "Fix" was to remove the guard altogether. Has anybody else experienced this? Were the holes tapped into my case at the wrong locations by the factory, or what?? I wear riding boots, but I don't like the idea of that countershaft sprocket spinning so close to my ankle. Any ideas are appreciated.