Thanks for the input. I do need to get a respirator. I have always painted outside away from any houses in the past with my gun. I do like laquer better as the base coat because I can put anything on top of it. I usually put laquer primer, enamel paint, then krylon for any black/white markings or aluminum and both black gloss and black flat for weathering.
It is good to know that I can build up that primer. Even if I have to use 3 or 4 coats. I usually sand it down almost to the glass then one final coat, but like I said, I always have used the spray can build up primer.

Thanks for taking the time to respond to my thread,
Patrick