Problems setting up a Novak Cyclone ESC

[Zipper]

I'm getting a fellow club members car ready for him for Sunday and am having problems in setting up his speedo.

He has a Novak Cyclone TC speedo & a Spektrum 3.0.

I plug it all in and switch the esc on. The motor immediately begins to turn forward. I hold done the one-touch set button and the esc goes into set-up mode. I set full throttle, then brake as per the instructions with no problems.

Then when I return the transmitter to it's neutral position, the motor turns forward.

If I trim down the throttle on the transmitter, I end up with no brakes.

I can only guess the speedo was created for transmitters with a 50% 50% throttle/brake and not the current 70% 30% throttle/brake.

Or am I just being stupid and missing something really obvious? Can someone help me set up the transmitter to work with this speedo?

Many thanks!