MOTHERS/MAG AND ALUMINUM POLISH.

[The Spaceman_imp]

I tried it out, and it does do a great job of cleaning off the yellow crap. Pretty easy too.

Unfortunately the "liver spots" remain. They seem to be surface corrosion that only appears when riding on wet roads. I can polish them out with the Dremel and Semichrome, but it's a PITA. Especially when you know it's going to be right back where you started from the next time it's wet out.