Cub Cadet 7304 Hydro

[davehead]

Anyone have any idea why my 7304 cub Cadet's hydrostat system chatters when the direction pedal comes back to neutral sometimes but not all of the time. Also, the machine does not come to a stop when in neutral, but keeps drifting. Is there any adjustments that can be made to get things back in proper working order?

 

[davehead]

Found a broken spring that brings control pedal back to neutral. Waiting for parts . Hope that cures it.