Bill,
Have painted many planes with the omni series paints, never had the issues you describe? Only problems I experienced was the clear was easy to sag if it is not thinned. Reducing it 150-200% solved the problem entirely. Been quite pleased with the finish Omni provided for the price. I have used the Omni clear with Promark graphics without any issues as well.

Ron,
Paint guys told me the 3M respirators are adequate for use with Iso? Is this true or should I be using something else???

Thanks,
Todd