Hey glennornp, the reason I had trouble taking up the masking is (I think, as I'm still learning) because I did not thin the paint enough before spraying with my AB, it went down too thick.  I also got side tracked by my wife and left the tape on for almost an hour after painting.  When I took up the tape it pealed away some of the paint along the edges.  I had to let the red paint dry, sand it back, paint the area red.  Then I masked of the wing area and re-sprayed the OD.  The thing I found that works for me is thining the paint a little more than I was.  It may not work for everyone by it has been helping me a ton.