Thanks Bowie. I’ll definitely follow the pot next time I open it up. Although I do believe it is 6386 balance as I’ve read it was included in later models.
A couple things I’d like to know if anyone has the answers:
1) What fuse should I use with this build? The original Gates had a .2amp slow blow but since it has double the tubes should it be a .4amp? It had a solid state psu though? How do I calculate what I need?
2) What are the steps for balancing the 6v6 and the 6386 cathode (assuming that’s what the other 100r pot is for) with the trimmer resistors? IE where are the test points? What voltage does it need to be etc?
3) should I test voltages without tubes in? I’m really nervous about the upcoming day when it’s ready to turn on and I have no idea what the calibration method is, what safety measures I should take, etc. I followed the silk and the eratta to the T. Even (at least temporarily) opting for the SS Psu. So I shouldn’t have any problems, but I don’t know?? I’m just assuming the heater voltage and the B+ will be within reason and I only need to make minor adjustments with the pots?
Ryan
Check the schematic, it shows the pins on the 6V6 (

that the pot leads to and conveniently tells you what voltages they should be. In fact, there's a wealth of information on voltages in the original schematics.
Couple things I'll caution you about with Drip;
-In some BOMs he lists a 47uf cap instead of 20 (22) for C12A. Don't do this.
-He lists the C13 as "optional". For me, "optional" meant, "doesn't work correctly without it".
Test it without the tubes but know the voltages in some sections will be WAY off. You can at least check your filaments (which should be in the ballpark), your B+ before and after the choke. see if voltage is getting to the tubes. But, to actually see if it's correct and within the 12% or so that you want to shoot for, you need the tubes to be in there so the transformer is under load. Refer to the schematic to make sure you don't have 300V going to the wrong places, etc. If something says 137v but reads higher without tubes, that's normal.