Frank, Did you make tonearms with magnetic damping since 1978? If your current tonearm was in the market 20 years ago, there would not be any gimbal nor unipivot tonearm designs. I also found that the gap between the magnets can be changed to compensate for the magnetic field strength in order to obtain the desired damping effects. The skating torque can also be independently adjustable regardless of the magnetic field strength. I guessed you already know those. I also noted that tonearm builders like music instrument makers. They both bring music to live.