[LW] [LW11] Axiom 9 defaults to Statute Miles.

[Adventurous]

I upgraded from the E7 Hybrid to the Axiom 9 approx 6 months ago. If I turn on the single switch for the other instruments (ST50 Wind/speed/depth/autopilot and ST60 Tri-data) first, then the Axiom will revert to Statute miles. This also occurs occasionally at random, which I put down to power glitch/spikes. If I attempt to select NM with the other instruments still powered, it jumps straight back to statute miles. If however I switch the other instruments off, I can then select Nm, which is retained when the other instruments are switched on.

My workaround is to switch on the Axiom a full minute before the other instruments, but this is obviously a pain.

Any thoughts on a cause, and a fix.

Thanks