Well, your slider can slide like an oyster to belly, but if your latch
is not working properly, all you have is a smooth slider. Study the
position of your latching mechanism internals closely after gently
closing, without slamming, then do the same after slamming. You should
see the difference clearly. I've had this problem twice. Once it
turned out to need only a striker adjustment. The other time it turned
out the mechanism was completely worn and needed replacement.
First things first, though. Have you followed the door adjustment
procedure in the Bentley? It's simple and works wonders. Do this
first............
Miguel

Suburbia is where the developer bulldozes out the trees, then names
the streets after them.
- Bill Vaughan