There are two adjustments on the electrics that control the door.
The door obviously has a mechnaism where it stops if it's impeded by an unexpected object, and opens again. (I have an electric door too, which does just the same)
The adjustments basically control the sensitivity of the door, and it was set just a bit too sensitive (It was on maximum sensitivity), and some wear in the mechanism over the years had obvioulsy become just a tad too much for it, so I turned it down a bit.
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Where everyone else talks and waffles, I get off my ass and sort it
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