I have found that even in non-smoking homes, air-borne cooking grease can be quite a nuisance. When chassis are really dusty, I find that giving them a good "blow job" (please pardon the pun) with the exhaust of your vacuum cleaner, with the crevice tool attached, is quite effective for initial dust removal (outdoors, if at all possible) Carefully go over the components with a tooth brush and a blast of air before getting it wet. In my experiences detailing, it saves a lot of messy, gooey wet lint later on. Good luck with the restoration. I had a black and white plug & play Zenith set of similar vintage, that was used for several years, and performed beautifully until it was replaced by a Curtis Mathes. I miss it now. It was so reliable, despite having a mistreated cabinet, and a lot of nicotine. As far as paste wax, I would recommend against Trewax, as it seems to turn white when it dries in cracks and crevices where it isn't buffed. I still prefer good old S.C. Johnson wax myself; I've never had a problem with it, be it furniture, floors, hell! shoes in a pinch! and the nearly half hour drying time gives you a chance to rest and and enjoy a cold beer.
