Here's what Eric Denton said from Parker in his very prompt response:
Mr. Muirhead,
It almost sounds like there is an issue with the neutral safety connections. At the Power Station there are 3 wires associated with the neutral safety system. Coming out of the Power Station you will find a Red/Black wire, a Black/White wire, and an Orange/Black wire. Only two of the three wires are used to complete the neutral safety connections and functionality. Check the connection between these wires and the wires connected to them. In turn trace the wires connected to Power Station (they may be either yellow or brown in color) to where they connect at or near the Yamaha controls. There are two brown wires that lead from the neutral safety switch inside the Yamaha controls that make up the end of the circuit. There is also the chance that the neutral safety switch inside one of the Yamaha controls is faulty.
I'm going to check these out as he has outlined...
If the neutral safety switch is bad, can I replace it or "jump it out" like RN? RN how did you do that???