During cold weather (and I live in Canada), my garage door opener will make the door close about a foot then start to go back up again. By having a quick finger on the control, I can stop its upward progress, and send it down again, a little further this time, and then it starts to go back up once more. It probably takes me about 10 of these stop-start manouevres to get the door all the way down and closed.

It's an old model and doesn't have electric eyes. It works better in the summer. Anyone got any ideas for a fix? Of course, I can always install a new closer, but that goes against the grain!

Cheers