You have outed me too...I have been watching.
Re your orange peel, I am no expert, have painted a couple of my own trucks and utes in enamel, maybe your air pressure is a bit low. I have always had the pressure up a bit, not so high as to cause too much overspray, but enough paint volume and enough air to be able to sweep along the panels and get a good coverage. I go by feel, so can't give an exact recipe! I find it pays to play around a bit to get the right setting before doing the whole job. Someone who is more knowledgeable in paints is bound to come along.

