I recently got a CEN Reeper 1/7 monster truck, and first off this thing is a beast on 6s! it's almost half the price of an Xmaxx and only a bit smaller. It seems very well designed and I drove it for a good thirty minutes at a concrete skate park with nothing breaking at all. I did fill the center diff so it would wheelie a bit more, and I threw in a spektrum radio I had laying around, but other than that I have changed nothing. It only has one problem, the servo is severely underpowered. It's a Savox standard sized metal geared and it only has 12kg of torque. Which at a standstill on pavement can't turn the wheels at all. So what would you guy's recommend for a standard sized servo for a large scale basher?