Knowing how much compression braking a 450 can generate I would think getting the clutch to release going into the corner is as important as engaging getting through the corner. Maybe a little soft so when you are rolling into the throttle getting to the apex of the corner the terrific torque of the 450 doesn't overwhelm available traction. Just guessing here because I never raced a 450 in a kart, only an open 2-S.
