Hey all. I have a 101b from 2000. It's time to change the tubes and for the life of me i can't get any tube to get past 20mA. These are all matched quads btw. I do believe the bias resistor is R114. What value resistor would i use to get my tubes to bias hotter? Also, i don't need to replace the resistor right? I can just piggyback the other one in parallel....correct?