Just a field report - the original ones in our RV-3 (flying ten years) look and feel new….
Paul
Paul, thanks for the report - I'll go a few more years before worrying about it.
I assume in 10 years you have had your P-mags upgraded at least once, but any longevity/preventative maintenance issues? I have had mine three years. I check the input shaft for play each year. - Anything else???