Went to start the covering process of the wings only to find out the two part Polyurethane which is starting to look more like clear Acylric Enamel the manufacture assured me was compatible with Poly-tone was not. Fortunately I did a test spot for fifteen minutes with the Polybrush only to find it removed the clear-coat polyurethane and primer right down to the metal spar. This plane is being built for seaplane operations so a lot of extra effort has been made to prevent corrosion. Now I will have to go back and re-spray everything including the fuselage with two part clear-coat Epoxy. Lesson learned, don't stray away from conventional methods and if you do be sure to test first. WHAT A MAJOR SETBACK. 2010 is starting a little negative, must be a great ending coming up...