Adjusting a double-glazed PVC door

Have you tried multiple turns of the adjusters that appear to do little?

I suppose they're not all the same, but on the Trojan ones, they have two adjustments combined - during each single turn the cam moves the door towards/away from the frame, but over the course of several turns it lifts/drops the door.

Ah! I hadn't realised that. Just tried the one turn, and noticed the movement towards/away from the frame as you say, but didn't realise I could go on turning. I'll try it. Thanks.

The bottom hinge needs to be made to go further from the frame, the top towards the frame. Its a matter of rocking or balancing one adjustment against the other.

The hinge pins are usually mounted on an eccentric so that if rotated (by means of the hex holes) it moves the door.

the glass may have been incorrectly installed the weight of the glass should rest on a single location close to the hinge side on the bottom door rail if the weight of the glass is acting on the handle side of the bottom rail it will force the frame of the door out of square in order to check this it will be neccessary to remove the glazing beads

I've come across two types of adjustment on the hinge, both have allen type sockets, sometimes underneath, sometimes under a plastic cap on the side.

One system is a cam which allows the door to move up and if you keep turning it goes back down. The other uses a screw which moves it more with each turn.

Thanks for the help. All sorted now.