I am building a TF 182 kit. I have rough sanded the fuse before applying a thin coat of ultralite automotive body filler. Sanded down to almost transparent thickness with 400 grit sandpaper I still can see some imperfections. Should I use something like Hobbicos' Hobbylite filler to fix the really small spots and then glass the whole thing before painting? Or, should I forgo the Hobbylite filler and see if the glass hides them? I estimate the bad spots to be around .002" deep. Any help would be greatly appreciated. Thanks.