When I purchased my 1998 pick up truck in 2002, I noticed there were some spots on the wheels. After a closer examination it appears as though something may have etched into the coating and on to the wheel. Almost as if someone sprayed a cleaner on the wheels and never washed it off (or on hot wheels). In any event, I have been trying for years to get these flaws out but no dice. I tried everything I know of to get rid of these. I can polish them, apply wheel wax and from a few feet away they look great but, look up close or when the sun shines on them these spots show up (frustrating of course). Any thoughts on how to polish these out or is this something that I am just going to have to live with aside from refinishing or replacing the wheels?