Yeah OK Tony thanks for that.
i am running the 15% nitro from nicks and it seems to work fine in the Kyosho's, better than the 10% i was using from elsewhere
i have charged up the batteries that are in the truck as they are rechageables, but may have to look at the one's that nick's has got which are a lot better looking and may work better than the 4 rechargeable ones that have been taped together and stuck in there.