Woody,

We taped and masked with brown paper the interior from the exterior (after first painting the interior) by taping at the edge of every exterior opening at the edges where the exterior skins ended. All exterior edges are over the interior pieces of sheet metal, except at the window openings - just mask at the inside "pinch joint". I forget how we exited the cab after taping the last opening (probably out the bottom?).

We'll be doing this again on at least one cab by the end of the summer (I hope).