Hi! I had problems with the steering on my Genesis, so changed steering servo to a Hitech HS-645 servo ( I have a 6 volt receiver battery) this should give the servo about 9,6 kg torque. It´s SO much better. The CEN 10 kg servo performs very bad.... the HS-645 is also quite cheap (at least here in Sweden) about 75 usd. I tried the steering servo as throttle servo but it dosen´t turn as much as the throttle servo did, so i changed back to the original one. I also changed the radio to a Hitech CRX transmitter, the CEN Impact has very bad range and a lot of my friends have had problems.