We built a Suncast wooden shed on the patio. Later we poured a concrete slab built for it to set on. We went to special care to ensure the slab was level. When we moved the shed to the slab, we had a great deal of difficulty putting on the (plastic) roof. We now have uneven doors. There is an approximate 1/4" gap at the bottom of the right door and the same distance at the top of the left door. This causes the holes for the door hardware not to line up evenly. I've tried putting a shim on one side and then the other, but that does not help. Is there any way to fix this without taking it apart and rebuilding whole thing?
Thanks for any help you can provide!