So, I'm getting to the point where I'm going to be applying the decals on my Airfix 1/72 Spitfire. The plane already weighs twice what it should because of the filler I've used but I must say properly sanded and painted it hides all the gaps nicely. However I have read many things about applying decals and one I see a lot is a light gloss varnish to apply decals better and also handy for weathering. Then a coat with matt or satin varnish to finish. I prefer the matt but wondered about the gloss coat for applying decals.