Hey guys found a fix for this problem but it is not easy. Alright you need these accesories.

1.Pack of Brillo pads with oxy action
2.Goop
3.2 hours of time
4.Lots of Beer

Alright take your brillo spray it with water and scrub the **** out of the charger do this until you have destroyed 3 brillo pads and your supercharger is a beautiful blue color second wipe it off you'll notice the spotting has become less. Then goop the **** out of the supercharger and let sit for 20 minutes then grab 3 more brillo pads and destroy them and scrub like hell until bright blue again. Then wipe off. And should be almost good as new. I never got it fully off but it helps alot. Repeat as necessary but I reccomend more beer if further action is required.
Hope that helps- GLockglade