Hi all I have a bass with graphtech piezo and a magnetic pickup. There's a volume dip when the pickups are blended. And I hear phase issues. The bass has an audere preamp, which was selected because of its active blend/buffer, which is Effective and convenient. However, it doesn't magically solve what appears to be some kind of phase issue. I have switched polarity on the piezo input at the preamp. No change to my ear. I am hoping of you know a way to allow me to mix these two pickups without a big change. Is there a simple thing I can add or do here? OR a re-do: what is the 'right way' to work a magnetic and piezo pickup together on my bass- do I need to start over to make these play nice together?