Great videos, I got a kick out of your comment on Gil's video from 3 years ago
One day I walk into Herb's shop and he shows me one such engine, tells me it was the only one of it's kind ,and I buy it from him. Next time I see him he had built this one and I believe another one. I say I thought it was one of a kind, he winks at me ands says "Well it was when I said so."