[other tom]

Good description Ed!!! thats exactly what I've done, except maybe go to a finer grit of wet and dry (800) after the 600 if its pretty bad or dark in color. Remember not to wetsand any areas that you won't be able to get the grinder/buffer wheel into, just rub those spots out by hand with the compound later. Also, on the big flat spots, use a large sanding block (piece of flat divinycell or airex works great). Its a lot of work, but it does the job. Theory is that the wetsanding removes the microscopic top layer which has oxidized, and the 2 (or 3) different grits of compound/wax is simply to "rub out" the miniscule scratches that have been created through sanding.