Hey everyone, I recently finished building this 5E3 style amp. The thing sounds awesome but it has a nasty 120 cycle hum going on. I've already gone over the lead dress and the grounding of the amp and I am now at a loss. The hum only increases with the volume on the bright channel and the normal volume doesn't seem to affect it at all. When I ground the grid of V1A the hum is tamed and the bright volume no longer has an effect. Any thoughts? See the pictures to get an idea of the wiring (don't worry about the missing input haha, I'm still waiting on some parts so I grounded the normal inputs for now) Thanks in advance!!