sounds like a right pain in the arse
i will try to take a picture of both sides today to show you the drop. The passenger side which is ok has been replaced a few years back by my sprayer and that one is bang on. Drivers side is origional door and is deffo out of sync.
The actual door catch in the door doean't look to have much movement, i presume the one on the b door pillar maybe the same ?
it doesnt drop when its clossed its when its open. When its clossed everything looks fine. When opened the door clearly drops a good inch or so, but when lifting the door their feels like no movement at all :S