Glossy primer????????? How is this to happen???

Ok so i am trying to make the switch to Alclad 2 from SNJ but ive been having a stupid problem. It seems my airbrush only sprays flat paint. Seriously i dont understand this at all its even happened twice. The first time I decanted Krylon gloss black into a clean used 35mm film canister and then transfered it to my airbrush. I began spraying the model and after I was almost done I realized to my horror that it was flat dead flat no gloss at all. So I just fixed it by not finishing the plane in nmf and painted over the flat black. i just figured that it was my dumb luck and I got mismarked paint. The second attempt was yesterday this time I used testors gloss black. I shot a small test pattern and it appeared gloss so I started spraying my plane and guess what? Flat flat flat its like the dry Arizona air sucks the gloss out of the paint as its drying on the plastic. I have told several people this story and havent gotten any theories better than its a bad batch of paint. It does seem like if I pool the paint up a little it has a greater chance to dry glossy, but if Im going to do that then I might as well use a spray can.... Please if anyone can help on this its driving me nuts.