After kicking the bike over a few times, I started hearing snapping sounds from the rotor/stator area. The kind which is usually accompanied by a spark. I didn't have the correct flywheel puller so I had to wait a few days to investigate. The puller came in yesterday so I was able to look at it this morning. There's a lot of rust in there and there were several small pieces of rusty metal in the bottom of the rotor.I think they must have hit the coil on the right. I found the guts for the stator from CHP Motorsports for $35, but they won't have more for a couple weeks. I looked at a parts breakdown and it doesn't look like there is a gasket for the side cover to keep out moisture. Is that correct? Can I clean the inside of the rotor to remove those rust stains without damaging those embedded magnets?