I completely agree with Soliver - you should have hex set-screw in place. Willi
(the DPS designer) makes a special one that has a flattened ball-point so that
the threads of the Rega arm are not damaged. For other arms (e.g. the
Schroeder No.2 arm) that one should be exchanged for a ball point hex screw.
I prefer the set-screw method combined with deck of cards (that you slide
between arm post and plinth to measure height and remove after set-up) to the
other Rega methods for VTA adjustment.
(the DPS designer) makes a special one that has a flattened ball-point so that
the threads of the Rega arm are not damaged. For other arms (e.g. the
Schroeder No.2 arm) that one should be exchanged for a ball point hex screw.
I prefer the set-screw method combined with deck of cards (that you slide
between arm post and plinth to measure height and remove after set-up) to the
other Rega methods for VTA adjustment.