Ernest,
Using those primer out of the can, have you encountered clogging of your precious airbrush?
The primer appears to be very rich to me.
When I tried using liquid primer with airbrush (on a scrap of plastic), I diluted it with 4 - 5 parts of thinner to 1 part of primer.
It worked fine but I had to apply at least 5 coats while, with spray cans, 1 pass could be enough.
KK