Sure. Anytime you have an extensive amount of work on a panel like this case, best way to handle it after the initial filler skims and blocking is to apply a polyester primer in order to have a good even surface unmarred and marked up with lines from filler spreaders on the panel. It's skim coating with a spray gun. You do need at least a 1.8-2.2 tip gun. Don't let it sit in the gun over 30 minutes or it will start kicking in the gun. I like the 2.2 best and recommend it. You can reduce with fast urethane grade reducer at a rate of no more than 10-15%. 3 good wet coats per session is my way with 10 min flash. I will see if I can get a pic of how smooth the primer looks compared to hand skimming with 2k glaze. There will be orange peel in it but that's ok. Kinda like build in guide coat. Most of it will hit the floor anyway if the prior filling and blocking steps were handled ok. I will seal it with urethane or epoxy before color. Polyester primered stuff is not meant to be left out side either. Porous to say the least. Good luck.
