I really don't like the threadless 'problem solver' type BBs. They put enormous tension on the BB shell. Since the NDS threads aren't required for torquing the BB cartridge laterally against the BB face (that cup simply there to center the cartridge along its axis), I'd prefer to have a shop chase the threads (and the DS threads while they're at it) and then install a Shimano UN55 cartridge for $25. Since the DS threads are fine, the unit should be very reliable.