I use a blank record to adjust anti-skating. You can get a one sided recording on ebay . It works for me!!
https://www.bing.com/videos/search?q=anti+skating+with+a+blank+record&&view=detail&mid=B...
https://www.bing.com/videos/search?q=anti+skating+with+a+blank+record&&view=detail&mid=B...