Glasskey: Yes, pinned 5 and drilled for 6 is fairlyt common.
sdescar: You think it's tricky now. Wait until you finally do get the thing picked, pull the tailpiece out, start to rotate, and find out you picked it in the wrong direction.
If memory serves you need to turn it counter-clockwise, but every time I sit down to do it I doubt myself. I know it on wiesers it only work one way though. Maybe somebody can confirm or deny that it is CCW.