As always, impressive work. You may have noticed that I have not posted many images here which are based on your techniques. I'll keep trying, but it may be a while before I feel as if I can match this kind of work.
Yes, of course, it shouldn't be difficult. I'm convinced, though, that my camera has problems. I'm in the process of getting another Mamiya body, and then maybe I'll try chomogenic film again. And yes, I know that it's a poor carpenter who blames his tools. But after approaching the issue as logically as I can, I can come to no other conclusion than to think my camera has intermittent issues.