Rich,
I'm changing at 11k as well. maybe its just a bit of carburation tuning thats needed then.
I was thinking that I should check teh PV's so I'll have a look at those some time soon.
Neal - Na, not been on the dyno, but maybe i will sometime. I was going to wait incase i get some pipes for it.
Stephen - Thanks mate, at least I know its about right then
Thanks all, much appreciated!