Big secret for V1R is go stiffer than the optional springs on faster tracks. What springs are you using in front? Blacks and even golds i find too soft for the front if you are really hammering thru the bends. Use some of the fantom springs.
Feel the MTX3 springs, they are at least fantom reds on the front and around golds on the rear.
Overdrive will make your car tailier on power. When you have a fair bit of overdrive the front bites hard under power which can make the rear come around. True the front 4.5mm lower than the rear. Thats 1:1. Then progressively true the rear down to increase overdrive and find the "sweet spot". I like a 3mm gap with the 25T pulley.