So I just built a little mojotone 5F1 circuit kit and retrofitted it into my champion 600 reissue. I was waiting on an output transformer but was chomping at the bit so I went ahead and wired everything up with the old output transformer. Sounded amazing! No issues and the 5F2A tone circuit I added was working great. Well, the new output transformer showed up from triode a few days later so I wired it in and tried to fire the amp up and nothing... I looked and the rectifier and power tubes weren’t heating up. So I turned it off and checked around inside and discovered that the guide pin hadn’t done it’s job and the tubes were both seated incorrectly- rotated counterclockwise by one pin position! I reseated them correctly but now the amp was/is having an issue. Pretty weak output until mid way up the dial then awful kinda flabby squealing distortion and then seemingly back to normal at full volume. Exact same problem with brand new tubes, new pot, either output transformer, and all the resistors read at the correct values. So could I have damaged the power transformer in those 45 seconds that the amp was on with no load or is there a chance it is a capacitor? I didn’t smell any burning or anything which I know usually goes hand in hand with frying a transformer... One more bit of info, when I measure the voltage at all the reference points, i get the expected readings when the volume pot is all the way down. it goes up in the first position where the B+ voltage first enters the circuit from the rectifier tube as I dial up the volume pot, but decreases in all the other positions as I dial up the volume pot until I max it out at which point all readings returns to the expected values. I am pretty new to this so not really sure what to make of this. Any help would be greatly appreciated before I shell out for a new power transformer. Thanks!