That's true about Finishline guns - they're usually pretty good. I had a beloved DeVilbis for many years and now don't have a glue where it got to - Chris may have it but by now it's OLD! My one try with a HVLP gun (borrowed from a friend in Beaufort) was equally a disaster. I just couldn't get the hang of it - Same goes for water-borne paints. Give me something with thinners and fixers any time!
I second the cardboard test cards, though. If you can't get the pattern you want on cardboard, it ain't gonna get any better on metal.
All this is precisely why I farmed out the paint on Pearl, BTW.......