Cut the foam ribs and figured out the location on the skins to mask from priming. I created a template to mark the location on each skin so they should all line up in the same spot. With the template I mark the skin, then masked off the outline so I could sand and clean. Then once it was clean, I used the template to cut some tape masks to lay over the sanded locations to mask for priming.
Tape off location to scotchbrite and sand (22-051)
