Thanks for the info Neill, the kite has the front bridles setup on the first knot , whereas I've only ever used my 11m on the middle knot and I'm v happy with this setup.
Thought it might be the standard position as the kite is smaller but think I'll go to the middle knot with f2/f4 and B2 at the back see how it feels . . . . . if its a quicker version of the 11m I can believe it boosts very well indeed.