RE: How often should you sandpaper crystal calls, striker?
Your call should be just fine. I know when I got my power crystal about 4 year's ago, I really had to rough it up to make it sound good. Thought I was gonna ruin it , I roughed it up so much, But now I'm not sure you could ever rough that call up too much. To me...the Power Crystal is the best slate primos ever made.