had a quick look at the set and a drive in the car, is is what i noticed:
toe was very extreme that car needs very little toe, it made the car twitchy at the front and very understeery, becuase the rear could not change direction easily, and increased tyre wear alot.
the bump dampers should be less the than the rebound, and the ARB's where a little high
the car can use r2's at front and rear for long race's, and the chamber at least a whole degree too positive.
hope that helped, i might try and make a set later explaining the stages that i took.
your lines arn't bad, but the corner after the first split is not quite full throttle you need to slow down more on entry
hope that's useful