I had a Genie screw drive installed on one of our garage doors when we
bought our house about 6 years ago. The other door already had the
same and it was still (and is) working fine.

The one that was just replaced 6 years ago is working fine other than
the screw is coming apart. When the screw comes apart the door goes
up half way and then just stops and the screw and motor just spin
until I turn it off and disengage the arm and manually move the door
the rest of the way. Is this a common problem, and how do I fix it?

I didn't install the opener because it was part of the contract on the
house. I am sure if I installed it I would know how the screw goes
together.... but under the circumstances I don't have a clue.

Any thoughts or ideas?

Thanks,

Tim