Hiya merlin
Most likely culprit if theres a fault is the diamond.
You just need a man with a microscope my friend... I dont know any though!
Im sure as Ian says it would cost very very little to get it looked at under a microscope by a specialist.... like £20?
NB
Alison Krauss and Union Station ''New Favorite'' on 200g from Diverse Vinyl is a MUST BUY !... I play it almost every day..
Cheers
Chris
NNB Tone - if you're reading this I bought Rainbow 'Rising' on your reccomendation yesterday. 