You know the problem here? The CPA model does suck but at the same time if you really feel you have been wronged, take action. Demand what is owed or drop them.
I have had my model changed numerous of times from CPA to Rev Share without a hitch. In your situation, trying to be nice, they treat you like some kind of primitive ape.
I bet if your presence was more solid the story would be different. Just an opinion, greek39