I have a John East J-Retro 01 pre amp plate on my Lakland USA made Joe Osborn signature 4 string bass with a broken small toggle switch causing the bass to short out and I would like to know where I can get it repaired? The small switch likely needs to be replaced. I sent an e-mail to [email protected] 10 days ago but no response as of yet. I’d appreciate any suggestions on where I can get it repaired. I can ship the whole control plate to a reputable repair shop or preferably drive it anywhere in the Los Angeles, CA. area.