Hi Chrissy boy,
The diff issue has been sorted, if you want to use a ball diff, then caster do a metal crown and pinion set (some people say these are not available now). Alternatively I run the gear diffs in my 4wd, with a starting point 7000wt front and 3000wt rear for astro. For carpet/slippy (Maritime race way) 3000wt front 2000wt rear. In my 2wd version (Raster), I have been running gear diff with 5000wt. I'm going to try a ball diff for this weekend at my local track (Surrey/Hants) and maybe at next weeks 2wd regional at DMS. Pete and Carl at Answer Rc can help with spares as they are the sole importers and are extremley helpful and friendly. As for being a competitive car against other brands out there, it can and does hold its own. I quite often have good battles with fellow racer who at the start say 'you still running that thing'. Then I finish higher than them
, but I never rub their noses in it
. If you decide to choose this car, PM me your email address and I'll gladly send you setup sheets and offer any help I can.
Paul