I received a single 7x9 clopay garage door from someone replacing
their door. It has all the hardware and even the installation
instructions. I have been for a week trying to “retrofit” it to my
12x16 shed.

I have the track installed and can manually move it up or down but
have tried and tried and cant get the torsion spring to work in
helping with raising and lowering the door. I have done it countless
times all that ends up happening is the wire on the pulleys on both
ends end up “birdnesting” and going everywhere. Yesterday it actually
helped bull it up before it finally birdnested.

What can I do? Would having one pulley slightly higher than the other
cause this problem? I have had to do the best job I could with the
limited room I have.

Another thing I noticed is when I manually raise the door, the bottom
roller seems to be in a different place on the track on one side
verses the other. I measured the tracks on both sides though and they
seem to be the same height.

One last thing when I put it all the way up the end of the door just
barely touched a support on my shed roof. Just enough where the door
wants to come down rather than stay in the upright position. Is there
something I can add or do to keep the door up?

Anyway I appreciate any help as this is driving me nuts and my wife is
tired of me spending all my time on this!