Blues Junior Biasing

Hi, I'm new to diyaudio. Could some one please help me with a BillM style Bias Trim Pot installation for my 1995 (Green Board) Blues Junior? I've located my (vertical) R-37 and my (horizontal) R-31. I'm not sure as to placement & orientation. do I only replace the R-31? Should there be a link to R-37? Thanks, j.f.
 
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You don't need to fit a pot, there is no advantage.
Depending on the model;
The 100u (C25) will give a better attack and the R52 change gets the valves to the correct opperating dissipation.
Ensure the mains primary is set to the correct voltage see description, this will also help to cool the valves. Replace the EL84s with Sovtec or Eastern Block manufacture. Never fit JJ, they are low grade!
 

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