Phono cartridge left / right output voltage differ

Just received a new Denon DL-S1 cartridge and noticed that the output voltage for the left and right channels are different.The left is .16 mv and the right is .18 mv.Though this is only a .02 mv difference it turns out to be about a 12% difference between channels.

Will I hear this channel imbalance ? Should I send it back ?

Thanks