Woodsman, your exciting incident, sounds familiar, I have heard of that happening. What probablly happened was you dis-engaged the clucth lever, to free the mill, when you do that and the engine is still running, the blade becomes a large wheel, which pushes the carriage back at a high rate of speed, even a new stop & bolt wouldn't hold a carriage shooting back at that rate of speed. To all you guys with older mills(belt reduction feedworks) if the carriage binds in the cut try to trip the reverse lever, but never shift it into neutral, until the engine has stopped.
Frank, so they still have the speed limiter rotors, how much are they now? they have been available for quite a while, along with the electronic igniton kits that bolt right into the standard distributors. When are you getting you SUPER mill?
john