Majority which I "tested" (putting them halfway and see if there's any input) actually work. I've filed down a couple and tested them, still nothing. Now that you've pointed it out, I have a hard time putting the switches completely in and when I took em off I noticed one of the pins is a tad bit bent, almost unnoticeable. Maybe they don't fit? Although when I compared them to the KTT Kang Whites they were the same size, and the KTT fit really well.