Howdy all, a friend asked me to check over his amplifier, which is in rather astonishing condition, and I have a couple of questions for those more familiar with this particular model. I replaced all the high-voltage electrolytics which measured okay but some were leaking electrolyte so it would appear they were caught in time. I replaced all resistors that were outside of 10% tolerance (screen-grid x4, 68k input) and re-tubed with matched set of Tung-$ol 6L6GC. I noticed that the NFB resistor was 100Ω whereas the schematic says for Single Showman (8Ω it should be 47Ω. I piggybacked another 100Ω across it to bring it to 50Ω. I'm not sure why it would've had the 100Ω fitted, guessing error at factory? Thoughts? I also added a 22n across the 20n in the Tremelo circuit, which slows it down to about 1 cps. All the component values in the trem circuit measured fine so guessing all these amps have fast tremelo? Lastly, I did a baseline measurement with the old tubes (unmatched set) and got 69Watts. With the new set the best I could muster was 82Watts (1kHz spot tone, 8Ω load, before onset of clipping). Pretty close to the claimed 85 Watts but I mention because generally I've found Fender amps serve up what they claim power wise - albeit only just. Any input appreciated. I still have the amplifier here while I *break in* the new tubes.