This problem was 2 fold. The circuit board was initially bad, causing the customer to call out a different technician before me. That tech tried to replace the mini levers, and assumed that it still did not work because he didn't have the calibration software. After replacing my circuit board I was able to lift/lower and tilt only during calibration, any other time I still had "hydraulic interlock return to neutral". I found that the Aux mini lever he had purchased was defective, after replacing it worked again. Thanks!