A SDS is a great unit for equalizing the variances in pulley, platter and belt machine tolerances.
Not to mention variances in household voltages too.
I thought the speed was supposed to be slightly faster than 33 1/3 when setting the speed using the KAB though, to offset the slight drag from the stylus. Not much for sure, but just so the dots appear to be ever so slightly moving fast under no load so that it would be spot on under load. Is this incorrect or misinformation?
I have tried it both ways and can't really say that I hear much of a difference. Nothing like the differences I hear in overhang, VTA, VTF or azimuth. I'm surprised to read that you are hearing that much of a difference.