Dear Davidriggs: If the overall cartridge set up is right the IMHO what you are hearing seems to me a problem with cartridge traking distortion.
45 RPM puts higher demands ( over 33 rpm LPs. ) on any tonearm/cartridge combination but on my experiences not so hard to have the trouble you have. So could be that the cartridge suspension is in trouble or that in your analog rig the tonearm/cartridge combination is not well matched.
To be sure maybe you have to mount the cartridge in other tonearm and run the same recordings in your system and see what happen.
Regards and enjoy the music,
Raul.
45 RPM puts higher demands ( over 33 rpm LPs. ) on any tonearm/cartridge combination but on my experiences not so hard to have the trouble you have. So could be that the cartridge suspension is in trouble or that in your analog rig the tonearm/cartridge combination is not well matched.
To be sure maybe you have to mount the cartridge in other tonearm and run the same recordings in your system and see what happen.
Regards and enjoy the music,
Raul.