cogging and immediate heating

[Maxxman]

Hi guys

I have an e-maxx quark, feigao 8xl, strobe, 16t pinion, ue driveline and 2x 5s A123.

I plugged it all together, gently pushed the throttle and it stuttered. tried taking off at different amounts of throttle still cogged. I had a quick look over and it smelt like something melted. The quark was surprisingly hot and so were the motor and input wires as well as the motor.

This was all after about half a minute.

There was nothing sticking in the drivetrain and it all looks ok but don't know what to do?

Any ideas

Thanks