I agree with Deb on the painting/anodizing of your crank... chainrings. The one thing that I would mention though is that if you look carefully at your chainrings, quite often it will look as though you may have bent a tooth. That is NOT the case! If you look opposite of that particular tooth, you will find another tooth that looks the same.... many companies use this pattern as an aid to help in the shifting process. If you should have any questions, simply consult your LBS.

Enjoy the fall riding season!