Thanks for the info gents, I was leaning towards just whiting the upper surfaces, it was in truth my preference and I'm also leaning towards the hairspray technique.
I also realised today that there are a lot more decals on this machine than I first though. But all further progress will be on hold for a couple of weeks as I'm off to Bali on Monday for a bit of a birthday bash. Can't let my three score and ten pass without something to remember, great food, a jar or three, lounging by the pool, a couple more jars (beers), a cocktail or two, an elephant ride and a couple of those famed Bali spa and massages, especially the hot stones. Bliss………….