Hows it going everyone! I have been doing some research for quite some time in regards to cleaning my Gen 1 Busa steel frame. It has a few stain that almost look like water stains that just wont come off. I have washed, used greaser, Brillo pads, and vinegar. Nothing gets them off. It the part steel part located near the ridders legs. If anyone has any ideas, shoot them my way.