I just got reply from Peter who said that he would recommend roller block junior with g10 tungsten bearing over stacked coupler for my micro seiki.
I guess if your vpi has out board motor, it may have more problem with lateral movement but vpi classic or micro seiki, with on board motor, I don't expect problems with lateral movement except may be the first few seconds after turning the motor on
I guess if your vpi has out board motor, it may have more problem with lateral movement but vpi classic or micro seiki, with on board motor, I don't expect problems with lateral movement except may be the first few seconds after turning the motor on