I want to install a stopper on the door so that it stops (and stays open) much earlier than the factory full open-position. There are plenty of stoppers to choose from, but I'm pretty sure I've seen a sliding door on a Ducato which could 'override' the stopper. You slid the door to the stopper, operated the outer handle and then you could slide past the stopper to the full open position. Is there a stopper like that on sale somewhere, or does that kind of function need some modifications also to the door locking mechanism so a simple stopper isn't enough?
The one I had in my previous PVC was something like this (and it couldn't be overriden):
The one I had in my previous PVC was something like this (and it couldn't be overriden):