On Jan 28, 9:27*am, dpb wrote:

snip

Four possible problems:
1. *springs need replacing
2. *rollers need replacing
3. *garage/house has shifted due to drought
4. *some combination of the above
5. *Needs adjustment/alignment and lubricating is (probably) all

snip

You haven't done anything to eliminate No. 3 except walk around and
eyeball it for major problems. A pro would do the following: a) check
left and right openings for plumb on front and sides. That's four
readings. b) Check the finished opening for square by measuring the
diagonals. That's two readings. Total time, 5 minutes. If everything
checks out, it's a door problem, if not, address your structural
problems, then deal with the door. Seems pretty simple to do and
eliminates an element of doubt.

Joe