I am trying to find parts to refurbish two 1978 Super-Vac hydraulic light towers. Specifically, I need the carbon brushes that go in the rotating portion. there are small and large brushes. The large ones were made by General Carbon, and I think I found some new ones. The small ones were last made by Staco (?). I can't find any. Perhaps I could find a salvage truck somewhere with these parts, or perhaps some department has them and wants to sell them. Got any info?