I've met my match with cleaning, I have no idea what to do with this set of wheels. The previous owner said this was just soap scum, but it seems to be far more than that. These are a set of Excel rims on a DRZ400SM, which (according to Excel) are anodized aluminum. I've tried clear coat polish and even aluminum polish by hand with little to no improvement. My next step is wet sanding these things down, any suggestions?