Sounds to me like the VTF is not set correctly (that is too light). Purchase a VTF gauge and make sure your setting is correct. Shure makes a cheap one that can be had over the internet from places like Music Direct. If you VTF is correct and this still happens it must be the anti-skate setting is way too high. I would start with my first suggestion.

Hope this helps.
Mr Vinyl

• http://www.amusicdirect.com/products/detail.asp?cat=&sku=ASHURSFG

See: http://dvautier.home.comcast.net/lp/lp.htm

Skating is often the result of record quality. I have some records that track fine whatever "anti-skating” force is applied. Other records are really bad especially toward the center where the skating force is greatest. I do notice that the outer record grove will sometimes suffer some fuzziness and "chatter" if anti-skating is not applied. I usually track at ¾ gram and I don’t get much skating. If you read the link above it explains this better.

The dials on the counter weight are a good place to start. Probably be close enough that record damage would not happen. However for $25 dollars it's worth it to get the Shure gauge and make sure it's correct in my opinion. Personally I use a digital scale to check my VTF.

Good listening.
Mr Vinyl