Of course fair enough 
.
At this point, you've been examining the workings and had it disassembled far more than I ever did. I can't easily check mine right now to review operation (stored away at the moment - sorry!), but I suppose it's possible it's an elegant mechanical system that uses the same motor and the clamps just naturally come down before rotation starts. I possibly had an incorrect assumption that it's a separate electro-mechanical actuator to move the clamps.
-Dave
