Last weekend, I had a chance to look into the various suggestions to
cure my stuck sliding door. The thing that worked was adjusting the
rod that actuates the latch at the rear of the door. If you've never
looked in there, it's very easy and self explanatory. You need two
wrenches and two minutes and you can put the door panel back in and
not worry any more about pulling the door open with your hands or
cranking hard on the handle.

Jim