Adjust toe & sway bar settings. I believe negative toe creates understeer, while positive improves oversteer - so you'll want negative in the front. Anti-roll bars; start at 3 in front & 5 in back, and adjust from there to see if it helps. Aside from that, ride height high in the rear to improve traction so it doesn't get squirrely. you can adjust nose height to help influence your toe settings. And lower camber setting in front while keeping rear 1.0-1.5. Those are basics I use to set up normal FRs, but you'll have to keep dialing in until you get a good medium.
