Hi ,
I've got a Zeta tonearm . While i've found relatively easy to adjust the vertical bearing play, not the same can be said for the top bearing that move the tonearm in the horizontal plane. I've made it by ear with a record of choral music orchestra . The result I've obtained is nice but I've noticed , that small adjustmet of the top bearing screw affect really much the sound . I've dismentaled the arm but indeed I don't understand how to obtain the properly adjustment as the manufactuer intended when designed it .