Thanks for all the responses. I'm still slightly confused though. Now I'm not sure if it's my joystick settings or the flight model was designed to act this way. I can understand when you say that real planes do bob around when ham fisted pilots use em, but in AH I seem to move about a lot just turning into a bank or changing nose attitude by a few degrees. I have been flying Spitfires (in AH) and this plane was based on the Supermarine race plane so I thought it was meant to be flown quite violently, also the shape of the wing was designed for better manoeuvaribilty during extreme circumstances. That's why I'm going with the tweaking of the joystick that isn't set right.
On a different note, I don't know why a lot of people talk down CFS. I think it is an excellent game/simulator. I may not be speaking from a pilots point of view, but I have been playing flight sims for a few years. In CFS, when you change from flying a Hurricane to a Spitfire, you instantly notice the difference with better handling on the Spity, even though engine performance doesn't change much due to the fact they both had the same engine (RR Merlin 3) fitted. That's another thing that baffled me. For example in AH ,why does the Spitfire MK1 (1030 hp) have the same performance as the MK5 (1440 hp) and the mk9 (1710 hp)? Maybe I'm just nit-picking, but I would expect there to be a big difference from the MK1 to the MK9. You would notice 700 hp surely? Oh well, I suppose all games have their strong and weak points. I like the cockpit views more in AH than CFS, also another thing I like more with AH is that you feel that height gives you a great advantage over low planes.