From time to time when swapping a fresh battery into my Zmax V5 I get low load errors.

To get it to go again I have to unscrew the RSST, hit the buttom (it says no load) then screw the RSST back down while holding the button so it fires (still shows 'no load').
It's usually ok after that, but sometimes I have to do it a couple of times to get it to go again.

RSST is set up with a mesh wick & 1.3 ohm coil - only just above the 1.2 ohm limit of the Zmax - is this the issue?

Once it's firing again it's fine for the rest of the batterys life, only happens every 2nd or 3rd battery change.