Decal touch-ups.. Airbrush or paintbrush??

I would think 30 min to an hour in between coats and then let it cure fully before overcoating. It probably won't take as long to cure as it is thin coats and a very small spot. And Scotts advice might be a good backup plan on this one, if using black doesn't look "right" a tiny spot of silver can simulate a chip in the paint. I had a decal abrade off on some panel rivets once so I just drybrushed the rivets sticking through with a little aluminum and it looked like the paint just abraded off there! Luckily it was a desert aircraft so it fit in with the idea of a sandy environment... be creative!!! My 'accidents' are where I've got some of the best ideas for later use on models...

Ahhhhh, thanks for the advice. Those sound like good ideas. I felt I was being lazy not trying to mask and airbrush. But the it's two little spots, one where I tore a very small hole (but its a black decal on white camo, sticks out like a sore thumb), and the other was where the decal just slightly overlapped too far (again, black decal on white, so it's too noticable). I think it should work with severl thin applications with a tiny brush. Using enamel paints and thinned, how long do u think I can wait for next application? 15 min 30 min or does it really need to dry like a day? Thanks again for the help.

Any time you can't make something look "Right" just make it look like you intended for it to be that way. If you can't get a joint just right put some wash in it so it looks like you intended for it to be that way. If you can't match the color of a decal paint it silver so it looks like a paint chip.

In addition to Tom's advice I'd also add that it would be helpful to use thin paint. It may take a couple of applications to get full color saturation but the coats will be physically thinner and less noticeable on a decal.

Davrukr - I use a paint brush, if it is a larger area to touch up I drybrush it, blending the paint out into the color of the decal. If it is a tiny spot I use a very small brush and just touch that one little spot. Usually after a dullcoat or gloss coat it isn't very noticable...