I agree with Nic, the driving style is different to the rear motor buggy. I always run extra weight especially under the ESC and also to each side of the centre line under the lipo. The ride heights you were quoting on the setup sheet look a little low. Cannot comment on the shocks as I run Losi but generally higher weight in the front than the rear, 35wt & 30wt normal. In general my X6 weighs in heavier than my Cat SX.
Hope some of the above has been of help.
