As stated by various others, could be the table, the arm, or complete set up. In my humble experience, conics are easier to set up or at least not as touchy as some of the ellipticals. Also as stated above I definitely can hear a difference between albums where one elliptical will perform great on one but not the other. Same for conical but sometimes there’s hardly a difference between albums. Some albums with a new elliptical, just between tracks I can have one sound just okay but then two songs down will sound excellent. I am experience that right now with Rolling Stones sticky fingers. With the song “Bitch” I can hear quite a bit of a distortion when it gets busy but then with “Dead flowers” and “Moonlight mile” sounds much better. Elliptical can bring out more of everything. A conical may smooth things out with less of a difference. That’s not always a bad thing where less detail is less distortion.