I agree with Tony. I usually will start with a 40wt oil and maybe sway up or down 5 or 10 as needed. But it sounds as though you're quite different front to rear. Have you tried 35 all around with the greys on the rear? Once you are transfering that weight to the front it will plant but I think you might be putting it back after you brake. Thus taking traction away from the front, resulting in your push at mid. Just my .02
Hey TurboJoe, Barnes and I were just playin with you Cali boys. I get a little jealous when I look when I look out the window at the snow all weekend playing on the computer. Bad part is there's nobody online cuz you are all out racing!!!
Maybe I should move out west...