Inigo wrote:Maybe a silly question, but have you checked if the turntable is sitting too high above the motorboard?
Another point is that these tonearms are supported on a ball bearing, formed onto the tonearm ring and the Base, and I've found sometimes issues with this. If there's too much wear on the ball races the tonearm wouldn't sit properly no more, and what is worst, if it had been mistreated or kicked at some position, the hard steel balls leave marks on the soft bronze ball races, resulting in a quirky tonearm movement across the records as the balls pass over these marks. There's not an easy repair for that problem, the ball races and end rings having to be reshaped and readjusted on a machine, and the balls substituted by new ones of slightly larger size. The best is to look for a new tonearm and base in better shape... Sorry.
Inigo has a good point: the problem of the tone arm height could be remedied by checking the turntable installation, or with placing an elevating ring between the tone arm base and the plinth, but the sticky movement is more complicated and not helped by the pot metal fragility. Even disassembling the arm from its base can be catastrophically tricky, as I found out when trying to dismount the arm on a small Columbia 100 - both arm and base ended up cracked. On the brighter side, Columbia more or less standardized its components, so finding another complete arm will not be that hard. This is what I would do, it is worthwhile, this machine is probably the best-sounding of the Viva Tonals, and looks good as well.