Thanks for the informative and interesting responses so far guys. It's made great reading and given me plenty of food for thought.

To answer a couple of the questions and points that have been raised-

- The front track has been increased by 30mm.

- I am running a factory R31 Skyline LSD.

- I don't believe my braking technique is the cause as I have ben battling brake issues too so I am not braking as hard or as late as I would normally. I have also been trying different braking techniques to preserve the brakes and reduce the understeer with little change.

- I like the light front swaybar but the only other bar I have tried in this car was a 120Y one and this was before the CA conversion.

- I haven't reduced the negative camber on the front yet as wear across the tyre is quite even. But I will try this for the next sprint.

For a long time I believed the Caltrac set up was causing 'push' through the corners so I removed the bars for the last sprint. It actually understeered more than with them on. I am unsure if this is because of the bars or because the tyres seem to have hardened up over the past two months.

Roll centre adjustment and rear spring rates are things that I will look into this week with Ken Graham.