i've pulled some of those self-drives before, they were surprisingly solid, though the hangers are shockingly thin.

Hey Scott, I must agree that self drives are pretty darn solid for how shallow the hole is. I figured I'd swap them while I was there due to their leeper hangers and their age. One of those was the only protection for a long section of slab at the top of pitch 4, where a bolt failure would be disasterous. :)

Thanks for replacing these! Did you use "The Device"?

You are welcome! Yeah, the device works really well ... I am psyched about it!