Does anybody know how to fix the sliding door lock on an 82 vanagon? In 
my van (name: turtle, what else could you call a diesel westy), the 
little knob on the inside that locks the sliding door does not stay in 
the "open" position any more. To open the door you have to either push 
the knob up (from the inside) or keep the key turned (from the outside). 
It seems like a spring or something is missing. 
Does anybody know how to remove the door panel in order to get to the lock?

Many thanks, 
Joerg