This is my third kit (Champ, HP Twin were my others), and I am having an issue I am completely stumped on. I installed a Pre Phase Inverter Master Volume and I hear output from both normal and bright channels with the master volume pot all the way down. Also the MV pot doest really work for the first 10 deg or so and then pops up all of a sudden. I attached a few images. Any helpful troubleshooting suggestions would be appreciated.