Assumed you were Martie Bell on flickr, whom I've talked to on flickr a few times.

Sticking with ppd sources would be your best bet then, I've seen people here talk about adding hydrogen peroxide to colour developer for more contrast (which is something I need to ask about actually, as it could be very useful for me). I've also seen it referenced as a a colour forming developer on its own which I didnt understand, or maybe I misunderstood the what was being said.

You can make your own good bleach, but I think using a commercial colour bleach would solve most of your problems, and would help isolate any problems down to the developer first, as well as giving 6 agitations divided into your developing time at least.