I just received my new PRS Custom 24 with Piezo pickups. LOVE IT! I am running it into a Helix and a beautiful patch for my piezos and other patches for mags. All was working great. I could switch to piezo only and play acoustic parts and then switch to mag for my electric. A few hours into a rehearsal it got wonky. Switch in piezo only was also sending signal out of the mag output also. I confirmed because I was able to adjust volume using the mag volume knob. Plus I saw the signal hitting my electric patch. Also, the sound is totally different. It was like it was in mixed position. Then I tried adjusting the volume of the piezo and it would increase as expected until about half way up and then start to decrease the volume. So the piezo volume know was acting weird. So I sleep on it and think all night what could be the issue. I try it again in the morning and it behaves as it should. Could this be something with the battery? Or something with it getting hot? Seems to be triggered by time. At least this time it was.