My brother broke the shaft of the tac2.
but then he installed a screw in place of it,
and ITS 10 TIMES MORE COMFORTABLE!!
you can move with only 2 fingers with ease,
since the resistance is much weaker
without losing centering ability.
I was unaware that my brother had changed it
so I thought this was how they was originally,
thus I went on a search to get more tac2s,
but when I finally got one,
I realized it wasn't as mega comfortable as my brother's, but still ok ofcourse.
if you have an unused tac2, try to replace the shaft with a just right sized screw,
or something similar...
and it might become a wonderstick like this I am using.