The heat gun works best but sometimes fingers can get a little hot too. Ultracoat is somewhat easier then Monocoat as the color is in the plastic not in the adhesive. Too much heat will cause more of the adhesive to seperate and stay on the framing. Experience will help. The adhesive residue of either can be cleaned up easily with acetone from the hardware store, use real good ventilation, preferably outside not inside. Removing the glue this way makes touch up sanding much easier. Don't forget that acetone will eventuall disolve CA glue so don't just keep on pouring on the acetone, put it on a rag and use that until it evaporates. Also be careful around any plastic parts with the acetone, you might want to mask them off. It's a little bit of a pain but not less than covering it to begin with, my opinion.