on the reddit Anduril forum
that mod involves adding scotch tape onto the silicone rubber switch cover, below the metal button. It just serves to reduce the spacing and slop between the external metal button, and the silicone rubber layer.
great info!
congratulations on your disassembly and repair, and thank you very much for the parts photo..
if the domed switch popper in your KR1AA continues to be unreliable, dont hesitate to remove the yellow tape, insure the legs are properly anchored, and then recover the popper with tape to prevent the legs from drifting out of their slots.. try to leave the unanchored leg room to slide freely by not taping that edge too closely..
I will be interested to confirm how many locator legs the popper has and how many are free floating
Another variable to be aware of is the tightness of the tailspring retaining ring.. Too tight is not good.
Firelight2 goes into more detail in this posts
Hank also mentions that adjusting the tightness of the switch retaining ring is an acquired skill.