Dear @dsockel : Some gentlemans makes each " new " set up around 3-4 months other every 6 months or one year, there is no rule about.
In your case, just do it. There are not perfect tonearms and the cartridge suspension goes in deterioration over time as the stylus tip, only to name why you need that " new " set up.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.