Leigh bifold door

A home owner from Indiana says:
My bifold doors to my bedroom closet will not close unless you lift up on it. I believe I need a new top pivot pin, but I'm not sure. The closest I found on your web site was #21-058. Is this what I need or something else to make it close properly? I don't notice any cotter pins missing, but maybe the spring is shot & I just need to replace that.
Bifold pins
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Paul from SWISCO responded:
Your top pivot pin looks fine, itself. Since the door hangs up when you open and close it, there could be two possible explanations. The first is that the bottom threaded pin, which resembles our 21-048, needs to be adjusted. This would raise the door to keep it from dragging. The second possibility is that the the bottom guide pin, which resembles our 21-058, needs to be replaced, or the nylon guide (21-108) is just missing. Let me know your thoughts.
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