I missed this thread and sorry about that jcb400sb.

If you already have a syphon feed gun you can go ahead and use it for primer only ,thing is , is that more will go in the air then on the car , as material transfer (VOC's , more overspray in air ) is not very good with these type guns. If you have a harbor freight in your town , they have a few HVLP top loader guns that are fairly reasonable in price, I seen one in my flyer that i got yesterday for 49.95 that would work for primer.
A HVLP with 1.5 - 1.7 is good for sealers, base coats, and clears.
Or you might check with your local paint jobbers and see if a painter maybe traded in a gun for a new model.

Those stud guns are great, its the only way to really work a dent thats hard to get to from back side. Never use the screw type dent pullers UNLESS you weld the holes up , as moisture can get in from the back sides of holes and start rusting , therefore poping off your bondo and everything else.

SprayTech