Have been practicing some Christmas music with the main melody line(s) on the Swell while agressively "thumbing" chimes on the Great with my right hand thumb. Result a somewhat sore right thumb.
Plus my computer mouse uses the right hand thumb. Simple fix, at least on Windows. when you call up/sarch for
mouse buttons The menu permits you to reverse the action of mouse buttons so now another right hand finger can operate the mouse and give the rh thumb a rest. No guarantee that the thumb (incorrectly now) instinctively continues pressing the left mouse button.
This menu also gives you the option to be left handed or right handed.
Rgds,
Ed