First:
Why are you glosscoating a Bomber? Second can't you just use Future Floor care where the decals go? Painting the whole a/c is not necessary.
If you do, then clean your airbrush with straight Lacquer thinner afterward. Make sure you then dissassemble it and clean the "O" rings and seals with regular soap and water. That breaks the mean chemical residue from the thinner and plumps up the parts for further use.
Remember the better that you care for your tools, the more consistant they will continue to work for you.