Thanks, that's what I'm thinking, going to look at building my own ball diff, not really cost effective getting it from the US when I have the know how and gear to build it here.

I have made a 3mm steel plate thru the bottom of the chassis, removed the rear chassis brace that hinders a heat sink and fan on the motor, and made a new one, also took of the CF brace and made one from 3mm plate running along the belt tunnel, the weight is now all low, track is 2.8 kgs without the body and under tray, also made the saddles fit inline with ESC inline behind it, track feels very stable and planted now, it was 2.9 kgs last time I raced it, most of that was lead in the front, funny thing is the front and rear weight is within 10oz of were it was before I started, i'm going to have to take a pic for you guys, just rebuilt the shocks and hope to run it tomorrow, I have removed all the sway bars for our loose bumpy track and that was a good move, even gets around our sweeper better (work that one out!).
Other than the clutch setup i'm very happy with the truck.