Acryl Update

I've been using five colors of Model Master Acrylic paint for a few weeks - neutral grey, aircraft interior black, semi-gloss white and so forth - and I still like the way the paint brushes, but I have finally discovered something about the paint that I don't much care for. It seems that no matter how diligent I am at wiping the threads and the top of the bottle, the cap still sticks to the bottle and tears off the foil gasket. I find that kind of annoying, and I'm not sure what I can do about it, since once I've wiped the threads and the top, the result seems to be out of my hands.

But the paint itself, as paint, still works very nicely.