Well I built mine there, as it arrived too late to build it beforehand. Got it on the track for round 4, and love it, instantly very quick.
I built it as per the manual, 3B pistons, 42.5wt front, 30wt rear, long wheel base, 60g's behind the shorty servo.. Everything else exactly as the manual says.... its bloody good, im not going to change the setup! Just going to race it and get familiar.