Thanks to everyone who made me feel so welcome this evening!
I haven't been home long - managed to find every diversion, crash and road works on the way home!
Went onto MB Models website and the only part they have out of stock is that "arm pin pivot ball" that I need to sort that rear wishbone issue!
Apologies for all the crashes etc I absolutely loved it though - so much fun.
My set up, out of the box, actually seemed to work pretty well! I don't think the car was the major issue with the lack of speed
Gearing seemed spot on and the car wasn't lacking straight line speed and although there's a bit of initial understeer (that could probably be dialed out with a little less toe-in, which I was quite aggressive with) I think I'll leave it alone as it was pretty wet out there.
Even the Schumacher yellow mini darts seemed to do an ok job. Just need to get used to this trigger/wheel controller!
The car doesn't look quite as pretty as a few hours ago but held up surprisingly well. I am just not sure why these bolt heads seem to shear. Other than missing that cup after that bolt sheared, everything else should clean up nicely!