I have a PRRI, Bordeaux with the 12" P12R Jensen. In milliamps, what would you suggest for a bias current? Not too hot, not too cold. I just noodle with it clean, so I'm not looking for any kind of breakup. When I got it, it was at 28mA. I boosted it to about 31mA, but I don't want to fry the 6v6's. 31 too much?