RE: EV5U setup?
Sverrir - can you try a quick test ... change the gear setting to NOT be reversed, and simply achieve your reversal by switching which airline you plug in to which port.
I seem to recall having all sorts of problems like this on my Jag initially, and IIRC it was that the unit does not properly handle gear reversal - gets confused about the start state, or something like that.
If that doesn't solve it, I will go hunting for the instructions that I wrote down while I was figuring the system out.
Gordon