Started polishing the upper side of the wings while I await parts for an engine service bulletin before my airworthiness inspection. The process involves several passes with 3 grade levels of Nuvite II polishing compound. Today I only performed three passes with the coarsest grade I use: "F". These pics show the difference between the before picture and the after picture which includes some light scrub pad and sandpaper work before three passes with the Nuvite II grade F.
Left wing root leading edge before.
Left wing leading edge after.
Even the "rough" cutting Nuvite II grade F does a good job!