It's hard to say based on your description. It could be set-up. It could be a bad cartridge. It could be a problem with the phono preamp. It could be a problem with the interconnects.
If you don't hear the same problem with other sources, I'd suggest swapping the phono preamp interconnects at the linestage preamp to hear if the noise switches from left to right. If it does, then the problem is at the cartridge or at the phono preamp (if you have a separate phono preamp). Then, normalize the ICs at the linestage preamp and swap the phono ICs at the phono preamp inputs. If the noise follows the swap, then the problem is at the cartridge or with the set-up.
At that point, the only way to determine if the problem is with the cartridge or the set-up is to change the cartridge. However, if you've tracked the problem to the cartridge or set-up, then I'd contact the dealer for a remedy. As I recall, the MMF tables are sold plug-and-play, and the end user shouldn't have to deal with set-up or cartridge problems.
If you don't hear the same problem with other sources, I'd suggest swapping the phono preamp interconnects at the linestage preamp to hear if the noise switches from left to right. If it does, then the problem is at the cartridge or at the phono preamp (if you have a separate phono preamp). Then, normalize the ICs at the linestage preamp and swap the phono ICs at the phono preamp inputs. If the noise follows the swap, then the problem is at the cartridge or with the set-up.
At that point, the only way to determine if the problem is with the cartridge or the set-up is to change the cartridge. However, if you've tracked the problem to the cartridge or set-up, then I'd contact the dealer for a remedy. As I recall, the MMF tables are sold plug-and-play, and the end user shouldn't have to deal with set-up or cartridge problems.