Hi Bauzace, This is kind of a late reply to your thread. But if you haven't already found out there is a hole drilled for the arm base and a knurled knob on the side of the thick tonearm mount base that you tighten or loosen against the arm pillar. There is a plug for the internal tonearm wiring that is mounted to the plinth that is removeable. There is also a adjusting ring to adjust tonearm heighth. Over all the Traveler is a great TT.