My sliding patio door from 1972 is grinding on the track. I want to adjust the wheels so I can try to get it off and replace the rollers. I'm
I'm fairly sure the adjustment screw is behind this weird 7-point cover but for the life of me I can't get it to budge with a flat-head screwdriver. I've removed the tiny screw next to it and tried lubing around it but it will not wiggle. Any ideas here?
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