On Wed, 22 Jul 2009 19:12:00 -0700 (PDT), Eric in North TX
wrote:

On Jul 22, 7:24*pm, hjkhjk wrote:
Give me a chance of success here...(you garage door pros)

I have an Al door, 18+ ft?, 20 years old, that bows in the middle

My neighbor Al Bundy used to have an A-1 door.

When My dad had that problem he just bolted a piece of angle iron to
the back of the offending panel. He did that in the '60s and it was
still working well when he died in 2001, & I'm pretty sure the present
owner still is using it.

I'll bet he is. Your dad know what he was doing.