I'm having a problem with this unit not having hydraulic function in the travel mode. If I let off the accelerator the function work fine. As soon as I touch the pedal they quit. There's no contacter pick up so the motor will not come on. I check the contacter for power it's getting a constant 36volts on the positive side and the negative is supplied bye the switches to the controller board. My negative drops out on the contacter. I can find anything wrong with the lift so I'm thinking it has to do with programming. Anyone have this problem before. Thanks.