Can you please post your actual setup and the kind of surface you are running on.
I for myself only know this car with a good rear and if it was to loose it was always easy to cure for example with 0.5° more camber or a little softer springs or a harder anti roll bar in front.
Only once on a low grip carpet I had problems to catch the rear into the corner and out of it with a spool in front. I then changed to a geardiff with 3000cst and the car was a dream since then (at least until the grip came up...).