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Gotcha... There were a couple of knobs that I could twist to make it more powerful, etc. I played with those initially, and there was no change in the performance.

BTW, I just went out to look...

Not sure, but I can check when I open the thing up. Why do you ask this? Would the screws' adjustment affect cold weather vs. warm weather operation?

No, what I'm saying is that the opener (the chain, etc.) still will not move when I disengage the door itself. I will pull the door down manually and then press the button for the opener to put the...

Any results? Our opener started displaying this same behavior a week or so ago (will only move a couple of inches, then gives up), when it got ridiculously cold. Has never happened before, and I've...