KCee I think it is just old age. I've surgery on my left hand and right wrist and both get achy at times especially in the winter. I went from standard grips to midsize when I was fighting the hooks and then dropped down to +1/32" or so, but now thinking of going back to midsize just for comfort. Sucks getting old.
i've some bad news for you potentially. Due to my pounding loads of ball when I competed in Senior LD,
I've had my left thumb joint replaced and now need the right one done ( in addition to other issues ).
Guess what - grip size doesn't seem to matter or help the situation. Maybe softer grips would help to
quiet vibration (+ larger maybe). I've tried them all. I just put up with it. Celebrex or Aleve helps but
I can't take too much of that either. What did you say ? Sucks getting old. 🙄