So you have muddy bass performance, right?. Other that that " mistmatch " I think that you have to check that the TT and tonearm are perfect level, you have to give 20 hours that cartridge to settle down, after these 20 hours make a check on set up on overhang, VTF, load impedance, capacitance, cleaning the cartridge pin connectors, checking the tonearm wire connection with the cartridge pin connectors, make changes in cartridge/tonearm VTA/SRA set up, azymuth set up ( this cartridge is very sensitive to this parameter and with an unipivot tonearm this is a critical factor. ), antiskating, I don't know which kind of damping " mechanism " ( oil or whatever. ) has that tonearm but you have to play with too, try to find if exist a recording where the cartridge performs great to analize differences, etc, etc.
Regards and enjoy the music,
Raul.
Regards and enjoy the music,
Raul.