Thanks for the kind words.
I will incorporate the axle bit Graham, I had forgotten about that myself.
Hopefully all typos 'n stuff will be put right and I will re-pdf it and pop it on the site so the we'll have the latest version to hand.
Now I know how easy it is to update it on the site, if anybody suggests an addition just let me know.
I have some information on tyre choice which I might include once I know its good info.