Axis MM90 with Piezo issues.

I haven’t heard back from Music Man Support yet, so I thought I would try here to see any suggestions. Maybe some of you have had these issues and could help me. I have a 2002 Axis Super Sport MM90 Hardtail with Piezo. It has a couple issues. The three-way switch that selects the Guitar/Piezo function is faulty. It will not stay in the up or down position. It only stays in the middle. Also The MM90’s sound fine, but the Piezo makes no sound. Since the switch is stuck in the middle position you get the guitar signal with no issues. But you would think the Piezo would work too but it does not. So that maybe tells me the faulty switch is not the Piezo problem.