I got a nice rapier drop from the Ala Mhigo level 70 dungeon. I equipped it and after a couple of fights went to repair it...but that wasn't an option. Turns out instead if being repairable by a Level 60 Goldsmith like all of the other rapiers I'd used up to that point, all of a sudden, it needs a level 60 Blacksmith. Eventually I'll get those last three levels of BSM, but I'm curious about the reason for the switch.