This past week I was upgrading my brake pads and after putting everything back together, I went out for a drive and a few miles in I started to hear this terrible rattling that turns out to be due to my caliper guide pins backing themselves out a few threads. I've replaced the pins themselves as well as the anti rattle clip (which strangely made a difference for a few days). They keep coming out. It just takes a few minutes on a backroad after tightening. My only thought would be that I stripped the receiving threads on the caliper carrier but the threading looks the same as all the other non rattling ones. Anyone have any thoughts?