Sanwa buttons washers-dampeners

Should one use washers/dampeners in Sanwa buttons?
The question is still open. Bought some almost by accident, as they were cheap. Thought they would sit in between the button and the board, but they sit *inside* the button, under the cap.

So far

WITH A DAMPENER
* Provides a sort of a "padded landing" like if a tiny cushion ("coussinet") was sitting under the cap; * Button seems a bit less "springy" as it springs back from a shorter/distance, after a padded landing; * feels a bit more precise, as it wobbles less on landing/springing back; * shorter trajectory seems to make it less satisfactory to mash; * sound is SIGNIFICANTLY REDUCED, more homogenous, less high-pitched; * padding+shorter trajectory may make help reduce mechanical stress on fingers/hands/arms/shoulders?

WITHOUT A DAMPENER
* the very satisfying CLICKA of a Sanwa, reminding of arcade...

How to use washers/dampeners in Sanwa buttons


In order to remove the cap from the button, you have to press two "thingies" locked into the base of the button. Some dedicated tools exist. I experimented with a few prototypes between finding something that just-works(tm):

2 squarish pieces of anything (in my case part of the rim of the cap of photo film) inserted one after the other in the hole of the base, to push the "thingies" up, one after the other...