RE: dcu 2060 flex-n-flat
I have never seen that problem and have sprayed a quite a few airplanes with it. How about some details of how you mixed it. Did you add any gloss clear to it? How much did you thin it?
You can spray just the one panel that is hosed up as well. You can also adjust the amount of sheen by adding percentages, by volume of 2021 (or other suitable gloss clear) I often do this on a project because the 2060 is just too flat by itself.