Kawasaki 70z v transmission problem

I have a Kawasaki 70 SN 70C4 5132 that seems to just go into neutral while in forward or reverse. It doesn't slip. It's like it's just disengaging. I've reset the computer but doesn't change. It just comes back, sometimes. Fuses are good. I'm thinking it's one of the solenoids but not sure which one. Any thoughts? Thanks, Rick, love this forum.

Kawasaki 70z v transmission problem