Hi,
Might it be possible that there is indeed a correct way round to the bluey but it is not discernible by the usual finger test and you have to listen to it both ways round and take your pick ? I originally loved the results, then refitted it to try and adjust the speed because it´s position on the inner platter was slightly lower than usual so I got a strobe disc and adjusted the screws on the motor so that it regained its usual half way up/down the inner platter and the speed was OK. By this time I had no idea which was the right way round so 50-50 chance. Over the past week or so I noticed it had become slightly jarring in the mids (front row) and lacking in bass positivity so this morning I turned it inside out and immediately felt more relaxed and understood what other postees have noticed regarding the rightness of drums and more extended cymbals. (Row 5 or 6)
I realise I am deaf and far be it for me to reach a conclusion but it was just a gut feeling.