Try the factory set up with the shock placement, on the shock tower and a-arms. Front and Rear.
Lighten the oil weight to 25w front, 20w rear. With the lipo battery the 30w may be to thick, causing your suspention to move slower, causing weight transfer to be delayed and the front to slide. ( I can picture what I am trying to explain, but if its not clear, sorry.)
Also what surface and condition of track are you trying to dirve on? If your on dusty clay, for example, you wont turn easily no matter the setup.
Original RC 10T, T4, RC8Te, Tekin RX8. Losi Ten SCTE, Slash 4x4.