Can anyone help me find a schematic for the Raven Labs PMB 1? Although I love the sound of mine for upright bass, I've had nothing but trouble with it. In fact, I sent it back to the "factory" three times and it still continues to malfunction. I have a good repair guy -- but he needs a schematic. Now, Raven Labs is no longer in business -- and I'm having a difficult time contacting anyone from the company. If anyone has a print on this...could you please email it to me? Many thanks!