Glove box door alignment

It seems like a high percentage of unrestored A-bodies I've seen, including mine, have a drooping glove box door. When shut, the door sags on one side (it seems like it is almost always to the left side), so the gap between the top and left side edge of the door and the opening in the dash is noticeably uneven.

A quick search didn't turn up any discussion on this issue, which surprised me. I haven't taken it apart yet to figure out how to correct the problem. Does anyone have any tips or insight?

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