I've got a Fuchs Music man mod that I have out of the chassis (to add a gain boost). I got the gain boost working (adding the relay) and thought I'd check the bias on the amp while I had it out. (no external bias points). The amp has JJ EL34 tubes in it. So I measure from pin 8 of the power tube to ground (as I've read to do and as Andy mentions in a video) and I get .020 v. I've biased amps before so I know that this is 20ma. From what I've read....EL34's shoudl be around 40 ma. I brought them up to 40 ma but one tube is stuck at 5 ma. This could explain the weak clean tone I'm getting. Questions: Is 40ma the proper current level to bias JJ EL34's? What do you suppose is wrong with the one tube that wont bias? (I'm going to swap it and see if the problem follows the tube or not).