If you have the latest type of hinges there will be a small rubber gromitt .Remove this and insert Allen key.As you turn it the gap down the edge of the door will either increase or decrease.
Be warned though.Dropped doors are normally caused by poor glazing techniques.If this is the case then no amount of Allen key adjusting will help.Leastways not for long at any rate.
Www.markcooperglazing.co.uk offers free advice to all in coventry and surrounding areas and has been glazing over 33yrs
www.markcooperglazing.co.uk, June 2012
