Actually, the job wasn't quite ticked off. when I tried to tune it a bit it was a little stiff up and down the gate but not across. Looking at the anchor point on the gearbox and thinking things through it didn't take long to work out why I was having a little trouble (resistance in the change) when going 1-2, 3-4 & 5-6 and visa versa. Long story short, made a small saddle to sit mid gearbox and provide a much better anchor point for when the translator threaded bar was only being used as a datum on which to anchor a push / pull point. (hope this makes sense). The previous off centre shorter mount position pic ( as suggested by the supplier along with other pre-existing mount points on the box, non optimum ) also included. Now its smooth as silk !