At the same time as I sprayed two coats of Poly-Brush onto the empennage items I did the Ailerons and the Flaps as well. I have now run out of the three gallons of Poly-Brush supplied with the kit and have yet to spray the two coats onto the Wings. So I ordered two more gallons from Aircraft Spruce along with a gallon of Reducer (I specified the R65-75 reducer which is more suited for the temperatures I am working in: less than 85F.)