Can anyone help please. Have recently upgraded from Linn Basik with Mk1 Akito Armto Goldring GR2 with RB250 Arm and Goldring 1012GX Cartridge. I am very pleased with the extra detail, but there is one thing that is niggling me. I have noticed on a couple of tracks that have either slow held piano notes or slow acoustic strumming there seems to be a slight wavering in the tone. I have tested the speed with the audioorigami strobe disc and everyrthing seems ok at 50mhz. It could be that i am just noticing more detail although I have upgraded the standard platter to the Black Acrylic one from SRM Tech and this does weigh an extra 100 or so grammes. Do you think this could affect the belt performance? I have put the old platter back but it still seems to be there. I have read articles saying that an extent of wow occurs with all belt drive turntables and could it be that my ears are just too sensitive. I will no doubt get a definitive answer when I take the said vinyl round emmas house and listen on his superior equipment (he thinks I'm imagining it and should be sectioned) I would appreciate comments from anyone else who may have experienced this. By the way, I have checked the oil in the main bearing and all seems ok there.