Thrustmaster TH8A Shifter Mod with metal modified

IDEA: replace the tactile sensation parts with sping and metal ball. give better feeling and more resist from wearing.

https://www.youtube.com/watch?v=Ybp1Ym-7W20&feature=youtu.be

stuff to buy
10mm metal ball X4
7mm width spring with arbitrary force
M3 screw 25mm and nuts for fixation

installation sequence:
ball-->spring-->M3 screw

make sure adequate grease over contact area with TH8A