Window regulator parts

[Layne]

I'm missing one set of the plastic bushings and spring on the tip of the regulator that engage the slotted bracket (far right in the photo). I can't find a part number for any of this, which probably means it wasn't sold separately from the regulator. Any help? It's not super complicated stuff, I can probably just make it if I have to.

Note: the pic is a manual regulator, but mine are power. Shouldn't make any difference.