I have been using the Top Flite magnetic balancer for some time. Today I realized that the steel shaft seems to insist on resting in the same orientation, the same side always up. This seems to be a magnetic influence, as it "snaps" into place each time if rotated to another orientation. It is as though the shaft itself has magnetic poles. The shaft is straight, and was even demagnetized, to no avail. This tendency to lock in a specific orientation is influencing balancing operations, especially evident with smaller props. Flipping the shaft 180 degrees has no effect. Neither does allowing one, or both shaft ends to contact the magnet faces themselves. Any suggestions? Thanks.