Ok - so that I can keep my hair I have to ask for help.

I'm actually trying to set this up on five boxes - but I broke it down to two until I can get two boxes working.

Two computers and a simple setup.

Code:
<Label w1 192.168.1.X SendWin "WoW1">
<Label w2 192.168.1.Z SendWin "WoW2">


<Hotkey ScrollLockOn A-Z, 0-9, F1-F12, Minus, Plus, Space, ESC, OEM2, Enter, Backspace>
 	<SendLabel w1, w2> <Key %Trigger%>
Machine with w1 is the HKN server
When I use the keyboard to either machine and type locally on a local window - then everything works as expected - the keystroke is sent to the local and remote windows as expected.

Now if, from either machine, I slide over to the other machine (Kavoom KM installed all the time) then I get double input on the machine the kavoom focus has moved to and nothing on the machine the real keyboard is local to. (When using all 5 machines - the three other clients get the keystroke)

I've tried loading KM before HKN and vice versa - same situation.
Clearly there is some setting or something I am missing. I'm tired so this post might not even make sense.

Thanks to anyone for any input here.