My '91 Subie Vanagon continues to provide almost flawless performance on my weekly
round trips from my FL home to my GA home back.  On my most recent trip back from GA,
the latch on the rear of the sliding door came off the locking pin.  The door did not
open while I was driving, but the rear end of the door had moved out from the body.
 I had this problem some years back, but I had a body shop take care of the problem
when the shop installed the GoWesty plate steel bumpers.

It looks like the locking pin has moved down and to the outside with respect to the
correct position by about 1/16 of an inch.  I loosened the pin with a 15 mm open end
wrench, and moved it back to what appeared to be the previous position, and re-
tightened the pin.  I have not driven the van enough to make sure I have pin in right
position.

What is correct method for making sure the locking pin is positioned correctly.

Thank you,

John