[Elecraft] help calibrating KAT1

[Andrew Moore]

I'm trying to calibrate the KAT1 using an RF probe.
Parameter Atu is set to CLP, and Out is set to 5.0 watts.
Docs say that when I enter TUNE mode and watch the DMM's
voltage with the probe on RF hot and ground, I should
adjust WPM+/WPM- until I see 14 volts on the DMM.

I see 3.67 V and it doesn't change when I press WPM+/WPM-.
The K1 display doesn't change either - in fact it stays at 0.1 watts (not
5).  When I exit TUNE mode, the Out parameter has reverted back to 0.1
watts.

Any ideas?