OK -- you encouraged me to try harder. Now I see that with much, much more
force than was needed counter clockwise to agitate, the tub spins with
clockwise rotation of the shaft. I guess this means I should go ahead and
reassemble with the new coupler.

RHL

In the counter
clockwise direction there is agitation but in the clockwise direction
the
post locks after about 10 turns. Could this be because the brake is
preventing the tub from spinning

Comes to a stop?...or just gets stiff?...can you turn it any further?