I have a Deluxe Reverb build that offers some terrible noises on the vibrato channel. Basically, The Normal Channel works perfect, though the very first time I turned it on I had a high pitch like a microphonic tube and a lot of hum, since swapping a new 12ax7 in V1 I have no problems on the Normal Channel. The vibrato channel gives me no sound when the volume is at 0 and the reverb knob is at 0. With Volume at 0 and reverb turned up I have increasing hum. As I turn the volume up at about 1 I get a bad farty noise, and at 3 I get the noise sometimes with a constant high pitch squeel like the microphonic tube. However over the top of the noises I get guitar sound just fine, and I even get some reverberation on all the noises and guitar. If I pull v3 completely the vibrato channel works perfectly, except the vibrato effect doesn't work. It only pops when I turn it on very loudly. I tried swapping the 12At7's and I have tried every combo of 12ax7 possible at my disposal. I used the weber 6a20 layout, and I notice out of the Reverb transformer hole there is dotted yellow line going to ground... I did not do anything there as I have no idea where that yellow line goes, I assumed it was the grounding of the reverb chassis to the amp chassis which is made by the output/input shields. I also did not do anything to the reverb can except remove the foam and plug and play, was I supposed to hook anything else up? I believe I grounded the reverb transformer center tap to the sleeve hole (ground) of one of the reverb jacks, could this be the problem? Perhaps that ground should be moved for hum, but could it cause what I'm hearing here? I can take pictures tomorrow, though I will have to remove the chassis from the head cab, which seems like such a pain. I was perhaps a bit arrogant when I mounted it in the cab before testing completely. Any help is greatly appreciated.