No, I believe the 4007s are the problem and the new tubes are drawing more current, for some reason. They are 2.5 amp @ 1000V and this is a misapplication for them. The two resistors in that circuit are 62k @ 2 watt and that is not what is in the picture. Course, I am going with supplied info, not sompthin I have seen. LK, you got it right! Mesas DO suck a bunch to work on.