Junkman
Well-known member
One of my overhead garage doors will go up one panel and get stuck, unless I give it some assist. As soon as the temperature is above freezing, it works fine. I have no idea what the problem is at this point. I have lubed the rails and chain to no avail. It is a 1/2 HP Chamberlain chain drive door operator. The door is a 6'8" insulated metal door with a low clearance kit and springs on both sides of the rails.

