Nothing wrong with your cartridge. I used a MM3 with a Croft RIAA R for a long time and it was a great match. The RIAA R is considerably better than the standard unit and the RS model is another step up. You won't be disappointed. Glenn's stuff is fantastic value for money and his customer service is second to none
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Retief
Analogue: Origin Live Resolution mk2,OL Encounter mk3c,MM III and isolator.Digital:CA 840C.Amplification:Croft RIAA R, Icon Audio LA4mkii,Icon Audio MB845 signature version.Speakers: Kef Reference 203/2 Cables: Mark Grant G2000HD. Speaker cable Van Damme Hi-Fi UP-LCOFC.Headphone: Grado PS1000,HD650,HD600,Icon Audio HP8 RCM DIY Moth