Matisse, which version of the ZX5 do you have? If you want to know anything about the ZX5 range then feel free to ask ... I've become a walking catalogue for Kyosho electric stuff over the last couple of years.
The Kyosho cars can be VERY competative ... Look at Rich Cree @ Petit Rc last weekend ... box stock car, finished building the RB5 in the morning and a solid a finalist ... just to prove it was not a one off he did exactly the same thing with the ZX5-FS the next day!!!
Where you planning on racing? I work close to Bristol and always looking for places to race