Anyway, as soon as I got home from work it was in my garage and wheels off, it gave me a chance to clean them up (again!) but dead easy to do now that they have been waxed. I fitted 10mm at the rear and 8mm at the front. 10mm would be too much at the front but the 8mm looks just right, also there shouldn't be any problems if I eventually lower it later on.
I would show you a picture of them but as 'tonyoverdrive' gets fed up seeing pics of my Cab splattered around on this forum then you are just going to have to imagine what they look like - looks good though.

Graham