Adjustment of Front Door Hinge

[milend]

I have a Solidor front door and unlocking the door has become incredibly hard, I presume due to sagging - if I lift/push up the door on the side of the lock, it opens normally.

My local glazer was stumped by the hinges and said he has never seen these before, so he couldn't tell me how I can adjust them myself.

Has anyone seen such hinges and has advice about how to adjust the door? The tiny black dots are actually caps but if I remove them, I do not get access to anything I can adjust inside - looks like the covers(?) are misaligned, so I cannot get to what looks like a hex socket inside.

 

[Wayners]

Think this will cover it, although you saying no top adjustment screw pin?

 

[JohnD]

If the door was supplied as a set, ask the maker.

If not, there may be makers marks on the hinges.