Any of y'all had your sliding door not want to stay shut?  The one on
my '87 Westy is doing just that, even when locked...  Not a fun thing,
driving down the road and have the side door pop open . . .  What
broken mechanical thing should I be looking for and where?  I was
going to start with the latch on the rear edge of the door, but it's
too cold to be working outside just now, so I'm emailing you all
instead.

Thanks,
Marc