I called mugen to ask some guestions about my clutch acting up and I also asked when a MTX-4 might be coming out and he said in june or July I hope it is as good or even better than the MTX-3 but what else other than a lay down servo can the do to the car. I was also wondering if anyone has a smaller reciever that will work with my JR Xr31 becouse my recievr will deffeintly be to big if the 4 has a lay down throttle servo.