Some how I made a NASA grade error with choosing a switch, in the sense of unit mixup. I wanted a panel mount thing to fit into a box (multi switch). I thought it would be the size of a silver dollar and it turned out to be about 1/4 of a fosters beer can.
This happens because you think simple component, loose tolerance, you can't fudge it. I must have thought metric = imperial.
Great switch though, just the box was too small.