I got to try the car on track today. I spent about two and a half hours working on the set up.
First of all, the front toe needed to go out quite a bit, helping me achieve some more usable lock. I had to take the ends off of the toe rod and cut them down so i could wind it in a bit more.
Then the weight distribution came in. I ended up with a rear diffuser and 30 grams of weight on it.
The front end was way too low so i put some nice turnbuckles in and raised it 1.5mm which really helped shift the weigh back.
The IFS suspension wasn't moving very freely. It turned out to be the angle of the rods that connect the lower arm to the IFS pivot. I found some old MS steering arm posts which were the perfect size.
I couldn't get to grips with the car at all on the slower corners. After a lot of tweaking it ran okay, the set up is near enough there for now but the FDR is way too low. This meant the rear wheels slowed too quickly, acting like a brake and spinning the car out.
The front underdrive gears from and XXX-D fit so I'm going to go with a larger size to raise my FDR and make it nice and smooth