sorry mate, i personally think the plastic primer is shite.... it comes off in long strips when you try and sand it... the normal primer is ok. as you say use some fine wet an dry, and some rubbing compound and it'll be shiny as. hmm, i havent found a big advantage with lots of laquer, you need a fair amount, but then as above use some fine wet an dry if uve got un even surfaces, and then use rubbing compound. its fantastic stuff. the 3m hand glaze it good too. Rich.