I took off my gauge cluster to fix some thing and set the clear plastic cover of it on my roof well it fell off and slide on some concrete and now looks like someone took sand paper to it . I was thinking of getting some 400 800 and then 1000 maybe 2000 grit sand paper wet sand with the 400 then wet sand with the 800 the wet sand with 1000 and then get some of that scratch dr stuff and then hit it with clear coat. How good would this do or it there a better way.