Great logic from Mondosmetals. I didn't engage the lead screw gear chain when I prepped it for moving. However, one of the moving guys may have shifted one of the levers. The carriage lock is engaged because I didn't want it to be sliding around in shipping. If the carriage is locked and the drive train for the power feed is also engaged, you have a locked spindle. Brilliant! I'll check it out the next time I'm at the house in Southern Maryland. If not, then relaxing the bearing preload and trying Jim's suggestion of applying a fair amount of torque through the chuck on to the spindle also seems reasonable.

Thanks, guys.