Is your stylus clean? If there's build-up, it wouldn't sit as deep in the groove and could be tossed about more.
Also, maybe you need to dial the anti-skating back. I run mine between 0 and .5g. Of course, that varies with the rig, but more isn't always better.
Also, maybe you need to dial the anti-skating back. I run mine between 0 and .5g. Of course, that varies with the rig, but more isn't always better.