Have you built a 6G6B? or do you have one? My build is sounding luscious, but the Bass channel has a bit of hum and it's like twice as loud as the other channel.. I find zilch wrong with it except the voltage going to the red circle is very high... If you play through it you wont notice the hum, but when you stop you will. Volume at 0 will stop the hum. I don't really care that much as I don't intend to use the bass channel, but just curious mostly if the design has that in general or...? Not even sure why I built this amp except for giggles. Especially now with no summer gigs! Note: the Volume and Tone pots are all different values comparing the Normal vs Bass channel. That seems weird for Fender. Is that the reason for the huge volume difference between channels?