Bifold Door Pin Cap

Hi, I need upper and lower guide pins for the metal bifold closet with the attached pictures.I am not sure of the size. I have 3 closets with the same issue. I am not sure if I need 3/8 inch caps or 13/32 inch caps or different sizes. Thank you very much.

My bifold mirrored closet doors are misaligned as you can see from images 01 and 02. The left door is little lower than the right door. I am not sure if it's a problem with the door or is it due to missing hardware. The hardware that is missing is in image 3. Not sure what do I call that, but is the ... (cont.)

Trying to figure out these parts for metal bifold doors

I am looking to replace all the mounting hardware for my 96-inch bifold doors 1975ish (full-vu. Model 8433 Serial 861097 I just want to make sure I get all the correct parts or any missing parts. If any kits work, I have no problem replacing the tracks. Thank you Paul

One of the bifold doors hadn't been working. In continuously lifting it up to close it I bent the top pin (the one with the spring). The door came off and comparing it to the one on the other side I definitely need the plastic "thing" as shown in picture 21-058. The only thing I see inside the doors ... (cont.)