pbnaudio, At last someone who is willing to check my finding.
BTW this ''Schallplatte 2'' is my ''old companion'' for years. I
even use the anti-skate test in order to get some impression about
the ''inside force'' . One can't get those 80 or 90 microns values
without increaising of the anti-skate force . The right channel
start with distortion first and need compensation with anti-skate.
The German expression is ''Mu'' which means the same as micron.
I really hope that you can refute my finding. Then I can sell my
Triplanar without sense of guilt (grin).