56- I take a little issue with Squeeze's comment that the caged nuts don't give any adjustment play. They don't give much, but 1/8 inch movement of the nut can translate into a lot around the rear edges of the door. I had a similar situation with my 57, except that the PO had "solved" the problem by removing the cages. Working alone it's tough to hold the heavy door, hold a nut, and thread in the bolt. I fabricated my own cages out of 18 ga sheet metal, and MIG welded them in place. They work just fine.
