Slimfold bottom pivots

We have a Slimfold Closet Door (two folding on each side/ four parts total) which is for our Manufactured House Washer Dryer Closet. The spring/pivot/"gizmo" which is on the track at the bottom, needs replaced, and I have no idea, how to find a part number or anything. The sticker, I saw just had "Slimfold", and I saw "Product E" which I have no idea what it refers to. I believe we need atleast the two pivots ( I will call it that for now) maybe it is all four needs to be replaced. Would you have such a gadget/gizmo, and how much does it cost? Do you have a "Replacement Kit" of all the parts for these doors, so that I could replace them all. That might make it more simple!! Thank You for your help, and look forward to hearing from you! Ted S

Thanks Casey for your response!

I took a couple of pictures from the two doors. I think they are called "pivots"! They might have a different name! It looks like each door has three of them, and one is stationary and has a screw in.

I was thinking that the springs might have worn out and they are not holding the door up! They do work, but do have a little sag to it

I hope the pictures are helpful!

Thanks again, Casey!