According to the Graham User Manual, the weight can be positioned at any point along the shaft, independent of the detents, without need for any "set screw" adjustments. In fact the set screw is not there for this purpose.
Gerardff, I hope we haven't gotten too far away from your subject. Some of this information does relate to use of the antiskate mechanism.
Gerardff, I hope we haven't gotten too far away from your subject. Some of this information does relate to use of the antiskate mechanism.