As TWL says, go over all the basics of the cartridge mounting process. I would add go slow, don't assume it was done right the first time. Make sure your tt is properly levelled. Are you using the brush/stabilizer thing (whatever it is called) on the Shure? You have to adjust the tracking force accordingly. In tracking force, a tiny bit more is better than a tiny bit less. I can't remember if the anti-skating has to be set exactly for the higher setting of the tracking force if you are using the stabilzer/brush thing, check the instructions provided by Shure. Good day.
Vinyl distortion - What's the problem?
The right channel of my turntable output is a little distorted, especially in certain upper-mid frequencies, while the left is crystal clear. I have a shure v15 (whatever the brand-new version is designated). I've tried replacing the stylus to no effect and the problem switches sides when I switch the left and right input cables around, so I know it's not my amp or phono input. It does this on brand new and well worn records. Any suggestions?