NOOOOOOOOOOOOOOOOOOOOOOOOOO !!!!!
NEVER regenerate "just like that" !!!!!
There must be a _reason_ to regenerate !!!! Of all the tubes I have had connected on my Muter maybe 2 or 3 I regenerated because of them showing REALLY weak guns.....
If the guns are only "just" good, they _are_ good and should not be rejuvenated !!!