Get yourself a San Carlos knife and deglaze the top beading. Then jack up the bottom of the door with a flat boor as much as you can, this will create a gap at the top of the door between the glass or panel and the top. Get some packers and pack this out as much as you can. Release the tention on the metal flat bar, then try the door. This is a quick way of getting over droopy doors.
This can get you a result but is not the correct way to toe and heel a door, I will post some pics and text on it this week
