First off, the tube set is Sovtek 5751, EH 6V6 and GE 5Y3. Here are the readings I did yesterday: Plate to cathode: 344.5dc (all readings dc unless otherwise noted) Across Heaters: 6.86ac V1: P1 147.1, P2 0, P3 1.597, P4/5 3.440ac, P6 142.8, P7 0, P8 1.501, P9 3.448ac V2: P1 0, P2 3.446ac, P3 368, P4 297.1, P5 4.88, P6 0, P7 3.443ac, P8 22.18 V3: P1 0, P2 380.6, P3/4 345.8ac, P5/6 346.4ac, P7 0, P8 380 Here's the deal, I had another problem that I worked on -- some power drop (not a lot but enough to notice) and fuzzy sound when playing after about 15 minutes. It came up consistently. I pushed things around with chopsticks and found an unsoldered joint at the tone pot. AH HA! Alas, the "ah ha moment" was exactly just a moment. Problem continued. So I pushed about with chopsticks more and found nothing else. I took readings yesterday with different rectifiers. Decided on an old GE 5Y3 that gave me plate-to-cathode voltage of about 344. I'm happy with that. This morning I turned on the amp and let her warm up a good bit. I again chop sticked around and nothing stood out. Plugged in my guitar and played hard for about an hour and the old problem doesn't present itself. I must have a bad solder joint somewhere and probably solidified it a bit chop sticking. So I'll have to do some reflows. Now the problem I noted above. And before I start, I installed star washers on all jacks and pots during my build. Had the amp on and well warmed up, guitar plugged in volume down (both amp and git). I turned up the tone pot first and at about 2-1/2 this medium loud hum started (remember, volume is at 0). Seems odd to me. I turned up the volume on the guitar and then the amp and nothing from the guitar coming through amp until its volume is about 2-1/2, then I not only softly hear the guitar but the hum also disappears. So I unplugged the guitar cable from the amp. I turned down volume and tone to 0. Started turning up tone and there's the hum in the same place and consistent all the way through the rest of the sweep of the tone pot. I leave that pot up with the hum, turn up the volume pot and at about 2-1/2 I hear a click-like static (not quite a pop and more than a sizzle), almost like a switch being thrown -- and viola the hum stops. I chop sticked around both pots' leads, capacitors and joints. Moving the ground wire from lug 1 back to the #1 input ground lessened the hum (volume is 0 at this point) but it didn't disappear. Played around with other leads and no changes, no noises. Turned up the volume, hum disappears at usual place, and I chop stick around more and still nothing unusual. Now I'm thinking this might be related to the previous problem and it's a ground loop from the tone pot to another short somewhere. And that could go back to what I suspect is a bad or weak solder joint somewhere. So I guess that I'll need to focus on the chain for the tone pot and volume pot. BTW, she's pretty much dead quiet at playing volumes, no hum and little hiss. There is no hum from my Tele pups unless I'm standing inches away from the amp. And the sound with her 2x8s in a Tweed Deluxe sized cabinet is awesome, when she sounds right. Thanks for letting me vent. Writing is a part of my thinking process.