Clockwise to increase. The nut is cup-shaped and adds preload to the Belleville stack.Contrasting that against regulators which have a movable valve seat, in which case counterclockwise increases the setpoint by requiring the piston to travel further before reaching the seat.
Ouch about the chrony! I've done that myself before. Glad you got the power back!
My probe is getting chewed up too.
TRRobb.com has them in stainless from UK. 17.99. Can't find shipping cost though. GRRRRR!!!