Having finally managed to get my 2018 Boxer's rear doors to shut properly, I'm now going to tackle the sliding side door! There's a small gap (about 10mm) at the top which I can see adjustment for on the top bracket. The bottom of the door has a good 25mm of daylight visible and the bracket is already as close as it can be. I've notice that there's a triangular section of the bracket that prevents it being pulled in any closer - is this the same on all Boxer/Ducato?Relay vans or can it being changed?