Bifold door parts

A quick learner from Long Island NY says:
I had great success with one closet's bifold doors, and I thought the other door was identical. But it turns out it's really different.

Do you know which parts I need?
User submitted photos of bi-fold door hardware.
Profile picture of Paul
Paul from SWISCO responded:
Check out our 21-033 bottom threaded pin, this may work for you. For the top guide pin assembly, compare what you have to our 21-091.
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