it's weird, i think its electrical problem , not mechanical , some notes i see today like : 1- seat switch , after bypassing by jump the brown to green wires , the indicator in the circuit board is on, but not the light in dash panel
2- moving the travel shifter from 0 position * park brake position* also will indicate the bulb in the circuit board is on, but not the light in dash panel
3- i put a small led bulb at the brake valve solenoid terminals to test when there is power delivered , some times it will have power and some times will not ,
but after that , if jumping direct power from battery to brake valve solenoid should it move ?
Does it sound like it wants to drive against the brake? Does it steer? Travel cable connected to the pump? Oil level good? Have you checked charge pressure, both in neutral and with the lever in forward and reverse?