There is a guy in Quebec that sells PyroCat-HD in powder form. Two tubs, 1 for A and 1 for B. I am trying to get the address and prices. Once I have this I will post here. From what I hear it's REALLY cheap.
I did my 4x5 negs in a Beseler tube on the rotary platform. Seemed to work fine. No scratches and even development.