1641 cub hydro jerks,aggressive, wheelie,

Hello everyone, this is my first time posting over on the cub side, and also the first cub I've ever owned. I have a issue with the hydro unit, I will first start by saying i have owned a john Deere 316 and 317 and i'm comparing the cub 1641 to them as far as the hydro control lever goes. The john Deere had a smooth motion from forward to reverse, The cub when going from forward to neutral or reverse to neutral comes to a very dead stop when it hits neutral, then slowly engaging in either direction is very aggressive, for example if in reverse and you move the lever to neutral, it comes to a dead stop flinging your body over the steering wheel, then you slide forward and it practically throws you over the back of the seat, and pops a small wheelie. Does anyone have any suggestions. Ps the hydro doesn't make any whine noises, or grinding, and does not creep while in neutral