seems like every few months the pre amp tubes on my fender hot rod go. Just replaced all the tubes a few month ago and it crapped out and I out new ones in again. this is probably the 3rd time this year. I play out with the amp and use it at home but it seems like a lot. anybody else ever have this happen. Great amp , put lower wattage jjs in it and wow what a different amp it became ,had the tube issue before , just curious . I hate to get rid of it but I feel like the amp is unreliable to play out with . Yes I can buy spares but I am not gonna put them in at a show and I am much to lazy to bring a spare amp .