Part needed
We should be able to help, yes. Before I can recommend anything, I'd like you to remove the pivot shoe from the track and show me a picture of it by itself. Seeing an undamaged version would be ideal, if possible. If the shoe is too damaged we may not be able to ID it.
While it's out, please also measure its width and thickness and tell me what you get.
Thank you! I think you can use our 15-140 as a replacement. It's not exactly the same as yours, but it looks like it has the same style. The dimensions are also very close. This shoe is designed to be used with the Series 150 coil spring.
If the shoe is the only part that's broken, then you don't need new springs. Your old springs should be compatible with our shoe. The same goes for the retaining clips: as long as they aren't damaged (and they don't appear to be) then you should be able to reuse them.