I used this part number "EVQ-P0D07K" to fix the failing switch in my 3s. It works as a replacement to the OEM but it has a higher operating force and a louder click. I wish I had gone with the similar "EVQ-P0E07K" which has a lower operating force and is rated for 5M cycles rather than only 1M. There may be other alternatives out there too. Edit to add: this is for the left and right click, not sure what the other switches are.