The R10 is pretty twichy out of the box in low grip. Here's what I did to calm it down, in order, one adjustment at a time:
1 - reduce ackeman shims to 1mm (kits are 3mm I think) so you're adding ackeman
2 - 5/5 droop (5.4/5 if you want more on power steering)
3 - move the battery forward as far as possible
4 - green front / blue rear springs (don't be afraid to lay the rears down if needed)
5 - shock oil to 450F-400R
The most significant setup change for me was the ackerman adjustment. Once I'd made all of the above changes the car became very drivable in low grip, corner speed was still good. Hope this helps.
Jim C.