findlay62 on "[Plugin: W3 Total Cache] Gmetrix and Specify a Cache Validator"

Gmetrix keeps telling me tp specify a cache validator but I do this already in W3 Total Cache. However on checking the specific files it refers to they seem to be plugins and widgets. Any idea how I can specify a cache validator for those?

Thanks

Derek

http://wordpress.org/extend/plugins/w3-total-cache/