Well. The spray gods have given up trying to cause me pain and suffering. Sprayed 2 panels yesterday, each 18"x24" and they turn out beautiful. No pinholes, no orange peel, no lumps/grit.
Sprayed BM Select Regal, CC-518 Escarpment grey, 20% thinning with BM Extender product, no water.
BM Extender is 100% acrylic resin which is the same stuff used in their acrylic paints. It thins a little bit but mostly it conditions the paint for better flow. Sprayed with Fuji Q5, 1.3mm needle and cap, full air.
I did try Advance again and it turned out awful. I will continue to use Advance but only when I am brushing or rolling it on. Now when I get my AAA setup, this may change.
Next test is Sherwin Williams Pro Classic Waterborne Arcylic Enamel with Benjami Moore Extender product. Stayed tuned.