I have the MMF5 and see the same thing. When I cue down the stylus seems to go right where it's pointed. However. when I cue up the whole arm seems to consistently move to the right. I don't think it affects the sound but can be a litle annoying at times. I just live with it as the sound quality is worth the pain.

You can slowly depress the cue lever, instead of throwing it down to cue, so that the tonearm is always on the cue rest while it's lowered. You can also drop the VTA on the cart so that it rides much closer to the disc when the cue is raised.