Hello after a bit of advice on the best method of restoring engine cases, currently rebuilding 1975 MX 250b, bead blasted all cases and then painted but looks like crap, there are a lot of tiny scratch marks, corosion/porous marks and a few gouges, probably going to strip again, what would be a good product to fill most of the marks and blemishes, i thought of using bog but dont know how that will work as there not real deep but stick out, cheers