Hello,
Wally mentions groove wear. Does this happen on all records or just one or two. I bought the Hudson ultrasonic stylus cleaner with just distilled water. Works great. I only do this once a month. The rest is done with a dry stylus brush before each play. I thought about this a while back that maybe we should all take a pick of our stylus when we get it so we can compare later. If you are going to have it retipped or buy a new cart it might be a good idea. I use an Ortofon Quintet Black. I can see pics on the web. They do not recommend using solvents so I only use distilled water. I hope this helped.