Thank you Citabria, I actually went to 3072 resolution. In retrospect this was a mistake as with 40-50 layers the files ended up at close to a gigabyte each. They became very slow to load and save towards the end. Making bits of the skin (engine, wheels) as seperate files and pasting them in finished helped a bit. Still, live and learn.
The problem with the camouflaged FAA aircraft is that limitations in most of the AH USN skins won't allow them. The F6F for example uses the same piece of art for both its left and right fuselage sides and another piece for all four tailplane surfaces. This is why I went for "101" and "11" as the fuselage numbers and left the airframe number off the FAA version. Perhaps when HTC do an F6F3.......
Most Corsair versions have the same problem with the tail, both the top and bottom surfaces have to be the same colour, which effectively means all dark blue schemes only. The only one I can camouflage is the F4U-1. So currently I'm looking for info on FAA birdcage Corsair schemes. Thought I could combine that with the Lt Gray version as my next projects.