Majesty has piezo bleeding through to magnetic but doesn’t show on oscilloscope

This is a continuation from a prior post that no one replied to. My Majesty goes to a splitter via a stereo cable and then directly to the amp, nothing else in the signal chain. For some reason, when the top switch is in the middle position, the piezo signal is still coming through to the amp. It shouldn’t be because the splitter is only sending the magnetic signal to the amp (I have the piezo output of the splitter connected to nothing for testing purposes). I have tried 3 different amps and it has done it on all of them. I’ve tried my JP6 through the same setup and it doesn’t do it. BUT, if I connect the Majesty to an oscilloscope, it shows no output from the tip with the top switch in the middle position with the magnetic volume all the way off. Theoretically, there should be something showing since that very same setup is producing sound in the amp. Does anyone have any thoughts? I don’t have a problem sending it to Music Man (besides UPS breaking it in transport from Illinois), but I’m afraid they’re just going to hook it up to a scope like I did and tell me nothing is wrong and then send it back and I’d be out $120 in shipping plus Music Man’s bill. But this is 100% an issue with the Majesty since I’ve tried other amps and also my JP6, therefore eliminating a bad cable or bad splitter. Not to mention I checked both with my multimeter and it all checks out fine. Help??