after much trial and error i can now change gears from the cockpit
, its not 100% but it dose work, i used a couple of old uni joints out of a 1/2 inch drive socket set, and they work fine but unfortunately have a little to much side movement in them, so will have to try and source some small steering uni;s from somewhere.
but at least the concept works
i may also up the size of the control tube from the 1/2 in it is now to maybe 5/8 or 3/4 just to give it a bit more stregth and a more positive feel
opinions as always appreciated
cheers John