My gf has an 04 G35 coupe and the stock pads just dust like crazy. I finally got arond to cleaning her car recently and the brake dust stained the rims and was embedded in some areas. Almost like there is no coating on the rim. First I washed to no luck with scrubbing, then clayed which helped a lot but stick didnt remove everything. Then dilutted a degreaser 16:1 with water and that did nothing really. 95% is gone but what can i try to get the remaining? I used 845 to seal for now hoping to create some type of barrier.