wrote:
My garage door makes it 1/3 of the way up and then begins to bind.
This is a screw drive opener. The rail between the opener and the
garage door, that holds the screw, begins to flex fairly seriously.
It appears this has bent the rail, and potentially the screw inside.
A neighbor told me he thought the screw just needed to be lubed. I
bought a tube of lube but am not real sure exactly *how* to lube the
screw. Do I just squirt the lube directly onto the screw for it's
full length? If the lube does not solve the problem, does the opener
need to be moved further away from the door or something like that?

It sounds far more serious than just lubrication on the screw.

Phil provided good advice to first disconnect the door and all. I
agree w/ all that and would just add --

If there's any indication of damage already that needs to be fixed
first or will simply exacerbate the problem even more. It's possible
there's an actual break in the screw on one side or the other (or even
both) and maybe that's causing a hard interference. The "serious
flexing" makes it sound like there is a restriction between that point
and the mount that wouldn't be the door itself binding as that would
be tension in the "up" direction...