Before selling the Valve jr. try swapping the 12ax7 for a 12ay7 or 12at7. The lower gain preamp tube takes a lot of the gnarlyness out of it's sound.Currently I have an Epiphone Valve Junior, V3 that I modded the resistors on and re-tubed with NOS glass, I'm not enjoying the EL84 characteristics of the Valve Junior. I have been a lifelong Fender guy, until I stopped playing out. The 6V6 sound works for me for its warmth and tonal spectrum.
The Valve Junior is going up for sale as soon as I sort this out.
Any thoughts/experiences to share?