Handling and setup

[skilochken]

Hi can anyone help. I have a 2.5 GTO and have had the car setup to Nobles specifications ie front 2mm toe out rear 2-3mm toe in. In a straight line at high speed the car feels twitchy and when cornering on fast gentle corners the car feels like it wants to dive into the corner harder and harder. On tight twisty roads it is not so bad and once in the corner grips well. Suggestions please?!