Jelco sa 750e

I learned this from a guru, and it turned out to be correct. Sometimes the FR64S and probably the 66S, so maybe the 64fx, pivot can feel kind of "stiff" at first. This may also apply to the VTF adjustment. The guru advised to just put the tonearm under a heat lamp for a short while, to cure the problem(s). I did this with my 64S, which did come to me with a feeling of viscosity in the pivot and a very stiff VTF adjuster. The heat lamp cured the viscous feeling in the pivot bearing entirely, and the VTF adjuster got looser, but the latter is still a bit stiff. I think you want it that way, so the chosen setting does not vary during use of the tonearm.  Despite the fact that I am using my 64S in my basement system, where the ambient temperature is typically in the mid to high 60s, cool by US home standards, the bearing has remained free after that one heat treatment.