Sorry to hear you'll be time-serting!
Hope that fix goes well.
My advice would be not to use a torque wrench on small nuts this size. I've had bad results with them myself. I don't see the point.
I'd rather see you use a 1/4" drive ratchet where you'd have a great feel for what is going on, and stop twisting when the nut bottoms out against the new washer you'll be using. Did that myself when I did the VCG and no problems, no leaks.