Originally Posted by ReiGnMaN

If I were you, I'd go 50 watts and swap tubes around... if it doesn't work replace em. Truth be told, I run most of my amps at 50 to push them if need be without being absolute overkill..........

(Every little bit helps trying to please bar managers or sound guys)

But seriously, if you havent tried it before, it's easy, pull the outside power tubes or the inner 2 tubes, no biasing needed what so ever to try it and see if she "Comes back"..... Beats buying new tubes just to shelf them.