Dynavector XV-1S and equal stereo output?

I apologise for the clumsy title but noticed that when I play mono recordings through the Dynavector, the image is slightly to the right side. I then comfirmed this by recording the output , noting that the recording level was 0.5 to 0.75 db less on the left channel. My question is whether this variation is within normal limits or is this something that sorts itself out when the cartridge is "burnt in" ( it is only about 25 hours old).
Is there a better way of checking this disparity?

Thanking you