Looking at this review, it appears quite a few of the parts in your gearbox may be proprietary.
http://forums.zeroin.co.uk/showthrea...0-G2010-Review
Like said before, if you have a V2, the nozzle is dead centre. If it's a V7, like mine, it should be between the two flanges at the bottom.
If your V6 doesn't fit your only option may be to go to G&G.