[rfuerst911sc]

I went in the shed with a flashlight and closed the door . Gap between the door and the frame on the hinge side is a solid and straight 1/8 inch . The latch side was tight so I removed some shims and opened up the gap to a consistent 1/8 . The door closes better but still not easy .

There are no " wear " marks on the door or the frame . The sill is not adjustable that I can tell . The door frame is straight/level/square based on 2 ' and 4 ' levels and various squares I have . The gap between the top of the door and the frame is about 3/16 and consistent . I will study it some more and see if I have an aha moment .