I have the adhesive type of wingwalk. The grit is fine and does not need refreshing. But the previous owner/builder got some paint on it that I have tried unsuccessfully to clean off. Any recommendations of how to clean and refresh a wingwalk? I do not want or need to add any more grit. Flat black brush on Rustoleum was recommended by an A&P but would like to hear maybe from others that have had a similar problem before I try and thing.
