Saggy drivers door
Preface: This is on a 924, but I think the doors are essentially the same.
So, the drivers door on my 924 drops when it's opened. It probably drops a good 2-3 centimetres (roughly an inch for the American fellows) from the closed position. This makes the door pretty rough to close since it doesn't hit the striker properly and probably also touches the lower doorsill. The striker/latch is adjusted so that the door sits very nicely (at least height wise) when closed. All body lines pretty much perfectly match the door.
Trying to do the ol' adjust the bolts on the hinge with the door supported by a jack hasn't worked. In fact it seems like that just moves the door rearward making it almost impossible to close (and also will take paint off the panel behind it).
If I lift the door with my hands when it's slightly opened (opened by a foot or so) it will sort of stay up (if only just slightly too low to close perfectly). However, if I at that point open the door more than halfway to the stopping point, the door drops again. Same goes if I put any extra weight on the door.
Does anyone have any idea about where the problem might be? Hinge pins/bushings? There doesn't seem to be any serious amount of play there but it's a bit hard to check since they are a bit hidden behind the door itself when moving it.
From what I understand from searching around, it seems pretty common that the actual sheet metal the hinges attach to on the body of the car can bend over time. If so, I assume the easiest way would be to shim the upper(?) hinge, so that the upper hinge half sits slightly further to the front of the car. However, it seems slightly cumbersome to get in there with a shim (and I can't find any pre-made ones so I assume I would have to fabricate one myself)
Any ideas?