oddly enough, here's an example of two "wrongs" making a right. i'm not a big fan of future floor wax but i decided to use it this time to a) give it a try and b) put on 5 layers of a cheaper gloss coat since doing that with polyscale would pretty much use up a whole bottle if not more. the plane had decals and i used micro set+sol as always. result: no problems.
why? i put the decals on over the paint without the gloss underneath and cover the decals with gloss. i did notice that the sol (or set, one of them) would dissolve the paint a bit but it wasn't that serious so i just let it re-dry.
on the good new side, future will go on over micro-sol'ed decals with no problems.