What gearbox and diff you running? Std? Check your gearbox oil before you go

Another tip is try not to wheelspin coming out of the corners. The RST with its harsh 3000rpm torque delivery tends to want to spin the inside wheel on the exit of corners on track (despite the LSD). It sounds like fun, but it massivly over spins the LSD to the point where it wants to go bang. Try and put the power down as smoothly as possible feathering and then increasing gently the throttle on the way out of the corner, not the usualy nail it and wait for the wheels to grip as you get straight again