If the diagonals intersect at the center of the door, then one or both
are warped and replacement should solve the problem.
Otherwise secure a block in the center of one side of the door. The
height of the block depends on how big the door is. Run a cable
across the top of the block and down to the furthest opposing corners
of the door. Tighten the wire to bring the door back in shape.

Art

"Jay Pique" wrote in message
oups.com...
Is there any way to pull a door that has warped back into alignment?
The construction is simple planks of hemlock nailed onto a frame with a
couple of diagonal braces.

JP