Adjusters are on the hinges but will only move it a few mm. Sounds as if you need to toe & heel your door,that is take off beads & pack the glass panel, put glass packer in L shape under bottom (hinge side) & do same at top (lock side ) so glass is tight, you can lower by putting thiner packer at top.
LH
March 2011
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix windows and doors.