Do I need to replace all hardware for my Stanley mirrored bifold doors?

I recently moved into a house that had two sets of Stanley mirrored bifold doors (about 35" width each). Both opened and closed with difficulty and I found that one door's weight was resting directly on the track rather than the bottom pivot bracket. After investigating, I suspect neither door has the proper hardware. In the forums on here where people had similar Stanley doors, they all seemed to have something like the 23-041 roller assembly, the 23-242 bottom track, and the 23-246 top track. However, in my setup, all 4 tracks (2 top, 2 bottom) looked more or less like the 21-452 low profile track assembly (this meant I couldn't figure out how to remove the door without unscrewing the track from the frame). Most parts do not have visible numbers, though the roller guides on Door 2 (not pictured) are marked "Stanley 4405-R."

Are my doors supposed to have a completely different setup from the other Stanley doors on the forums? If so, how do I install them properly? Or do I need to replace the entire set of hardware? If I need to replace it, what does a complete set of hardware look like? Aside from the top and bottom tracks and roller assemblies, do I also need new pivots, pivot brackets, roller guides, etc.? Please let me know when you get the chance!

In case you can't see the photo names, the order goes 1) Both top tracks, 2) Top left corner of Door 1 (same hardware as top right), 3) Bottom right corner of Door 1, 4) Bottom left corner of Door 1, and 5) Bottom track 1. I would have included more pictures, but hit my limit.

Hi Swisco team! Just wanted to say I ordered replacement parts based on your replies and figured out how to reinstall the doors. Your reply helped me solve the puzzle. It helped me see which parts were analogues, as well as which parts were up to date, and which ones needed to be replaced. More importantly, your reply also helped me realize that the hardware setup the previous owners had was actually correct?it was mostly just outdated, worn out, and installed improperly. Using this information and the replacement parts, I was able to order the right parts and properly reinstall the doors. They are now up and work great. Thank you so much!