Thanks to all for the replies, didn't think I'd get so many!
Bladewashout, sounds great when you put it like that, but must admit I do struggle with my weight, (and only being 5'3" tall).
Whirlybird, love the idea of the water container, I'm going to give that one a try, one under each seat.
I fully take on board that the fuel is aft of the C&G, and that the more of it (uncountered by weight in the front), the more the machine will fly nose up. However, what bvgs said about the R44 being 'twitchy' with not much fuel, so is the R22. This is a sort of 'catch 22' situation for me. If I have too much it's nose high, if I take less, the heli is definately more lively.
I guess I'll have to learn to live with it, (being the type of person who is naturally skinny, and can't put weight on anyway)
Thanks for all your inputs.