I just bought a set of Williams Fire Sites for my Glock 34. The front sight stake is solid. That is, no "hole" for a stake to be inserted like a "normal" front sight. How to I secure this in my slide? My friend who is a certified Glock guy threw up his hands and said "it should have a hole for a stake or a screw". Does anyone else have experience with this? I called Williams and they said it should be staked in, but how do you stake in an Aluminum sight?