Well, sibilance where it did not exist before on a particular record is often a sign of a worn or damaged stylus.
Do you have a spare cart in good shape to swap in for comparison? That's how I determine this when needed.
Of course, also make sure dirt/dust deposits are not accumulating on the stylus as the record plays. That will often do it too.
Do you have a spare cart in good shape to swap in for comparison? That's how I determine this when needed.
Of course, also make sure dirt/dust deposits are not accumulating on the stylus as the record plays. That will often do it too.