If you recently bought the car, then you're not good enough at driving it yet to win races. Keep practicing.
Personally I prefer a loose rear-end with FWD. It's closer to 4WD in its ability to oversteer on command, though admittedly it's harder to rein-in the oversteer once it starts.
It's kinda funny to look at the T4F and see a rear bulkhead that is clearly designed for a 4WD chassis. I wonder how much work it would be to kit-bash a T4 and a T4F together to make a front-motor T4? (or a rear-motor T4, to keep my Tamiya XV-01 R company.)