Thanks Ian,
Torque gages and wrenches come in handy and have used them to check holding torque and more importantly to see outcome of table adjustments and required torque to move a table. Need to think more about that other post.
The cloud over my head envisioned some formulas and general guidelines into an excell spread sheet.....and magic
.....there's a "ball park graph" for an unknown stepper!
RICH