older Slimfold door. Bottom pin is just a pin and there is a clamp piece to hold it in place. I have a number of pins, but none have the screw slots at the top, so I need to replace these. Could it be the 21-001 even though it seems to have more parts to it? Need top and bottom replacements
maybe lower pin in 21-001 and what I thought was a compressed spring is actually threads