I recently built the following 5F1 amp based on Doug Hoffman's schematic. This replaced my previous iteration of the amp which utilized a PCB from a tube depot kit. One thing I liked about the tube depot version was the 100k negative feedback trim pot in line with a 22K resistor. Hoffman circuit (attached as PDF): Picture of trim pot on PCB (old version of my build): PCB Schematic is here: https://s3.amazonaws.com/tubedepot-com-production/spree/attached_files/tweed_5f1_schematic.pdf It looks like the traces on the PCB (nothing visible on back of PCB, trace-wise) connect the R8 22k resistor to the top lead on the trim pot, then the bottom right lead is connected to the right yellow wire which is the negative feedback wire to the speaker output jack. It appears as if the right side lead on the pot has nothing connected to it. Is that right? If that is the case, and I want to add this pot to the Hoffman layout above could I do so by simply placing it between the 22K resistor already on the turret board and the "negative feedback" wire on the diagram. I would connect the top lead of the pot to the 22k resistor, the bottom right to the negative feedback wire, and the bottom left lead connected nothing? Thanks.