Nice work Gav, and a good result for you. Personally, I don't like Dinghams. They are way too big and look, well, not good. But I do appreciate that they give reliable coupling and un-coupling with hidden electro-magnets. We use them on the new club layout and there's no more double shuffle as when S&W's are used. I never minded the double shuffle, but again I can understand those who don't.
Love the experiments, keep it up mate.
Mike