True dat...yet I don't see any access "slop" in the motor or commutator. And again, it runs beautifully in the opposite direction (reverse): smooth as silk. Very puzzling.
I wonder if the big brass "coupling" that ties the motor and worm shafts together: is there perhaps any way to adjust that? Since this came to me already assembled, I don't know how all this was put together...
Mark in Oregon