Touchy/jumpy throttle

[thstone]

This is common. The engine doesn't really like very low RPM operation and will react quickly to even the smallest throttle input sometimes resulting in bucking as the engine increases RPM and the driver tries to ease off the throttle and back and forth.

One thing that I have found to help is to press the throttle at the very top. Since the throttle pedal is hinged at the bottom, this will give you more control for small throttle inputs.