Blueskies wrote in message Could that have contributed to the accelerated
jackscrew wear on the Alaska?

Not directly, but once the stab let go, it was all over because the elevator
can't overpower the stab. I believe the NTSB final report is out. It is
ingrained into us in ground school now that we try to fix a jammed stab only
once and then leave it alone.

If during take-off, the stab is set outside a narrow band, the elevator will
be overpowered. Pulling full back on the yoke won't rotate the nose or,
vice-versa, pushing pull forward on the yoke won't keep the nose from
rotating early, depending on which way the stab is set outside of the narrow
band. You can trim to correct the situation, but you may not have enough
time. It can ruin your day.

D.