Bifold parts identify

A quick learner from USa says:
Hi! I need your help identifying which parts I need.

I have three set of these doors. One on 36 inch tracks and two on 59 inch tracks.

I would like to recondition these doors so they open and close nicely.

Somebody at swisco showed me the 21-044.

The the closest if not the se vracket would be 21-205.

For the pins the one you attached (21-044?) looks like the ones I currently have that currently do not work well. I'm not sure if those were not the right pins or the tracks are bad and need replacement.

This is why I was thinking on getting new tracks, compatible, pins brackets, etc. to get the doors to work nicely.

Do you need anything else in order to recommend a list of parts?

Which parts would I need?
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Bob from SWISCO responded:

I think it would be a good idea in purchasing new tracks for both top and bottom. You can use 21-401 & 21-402 tracks. You can reuse the 21-044 bi-fold pins for the top pivot pin and the two guide pins. You will need the 21-002 bottom threaded pivot pin. You would also need some 21-150 nylinders to help the 21-044 guide pins to slide up and down smoothly through the door holes.

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