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After 10 years of normal operation, my garage door started bumping the center opener rail just as the last edge of the door passes the very front the rail before it closes. This causes it to pop back open. If I apply a slight bit of pull on the door with my hand during this point it will close without hitting. I figure some bolt got loose or something. If anyone knows how to troubleshoot this, I would greatly appreciate advice. Thanks.

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    It might help here if you could include a photo or two that show the door / track interference, the track configuration and the door pull lever configuration. Is the track fully straight or has it drooped/bent down? – Michael Karas Jan 13 at 10:52
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    Does a nut or bolt happen to have appeared on the garage floor recently? It might have rolled to an edge. Also, does the door seem to have excessive movement if you try wobbling it a bit, perhaps comparing one side to the other? – Andrew Morton Jan 13 at 15:51
  • I added some pictures. I haven't done any adjustments since I got it. No bolts seem to be missing. When the door is closed, it seems to be sitting correctly with no gaps. – Kathy Atchison Jan 13 at 20:10
  • After ten years, it would be worth going over all the nuts and bolts with a spanner and making sure they are tight. A socket wrench would be easier for some of them. Do make sure to use a tool which fits properly as otherwise it could slip and damage the bolt, or cause your hand to be injured. If you put on a thick wool hat, it won't hurt so much when you bang your head against something while doing the ones near the roof. – Andrew Morton Jan 15 at 12:05
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In your 3rd 4th and 5th picture you see the top roller which is adjustable. Check them on each side of the door to see if the adjustment bolts have become loose. And then as others have said check all the other nuts and bolts to see if any have loosened. If any have make sure it's not adjustable before you tighten it. In fact I see a loose bolt in one of the photos that's probably causing the problem. Loose Bolt on Bracket

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I would check to make sure that the rail has not slipped down a bit where it is fixed against the wall above the door.

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