Removed contaminated plastic floor from paint booth. Installed new sheeting. Vacuumed booth. Changed exhaust filters. Finished scuff sanding vertical stab. I received expert instruction on proper paint gun setup and spraying techniques today. With his guidance, I painted a topcoat on the left flap after scuff sanding. Much better results using his gun setup and spraying methods. ( I should have done this sooner!). I'm using my DeVilbiss Finish Line HVLP gun now.