your door needs toe and healin,take glass out then take the thickest little plastic packer that falls out after the glass comes outand place it on the bottom of the rebate on hinge side then put glass back in,then one at a time place packers at the top opposite corner and keep putting a packer in at a time until its level,put a packer in the sie of the door on hinge side at bottom then lock side at top,put beads back in and job done.hope this helps
shaun www.sdwupvcrepair.co.uk, August 2008