Yes, Rogue is truly excellent to work with. Give them a call - even if it's NOT under warranty I'm sure they'd be able to help out for very reasonable rates. In think you may get lucky here and only need a change of tube(s) and fuse(s) - in which case you won't even need to send the amp off.
I've had a KT90 short out in a BAD way before, and if a tube is going down hard enough to burn out an adjacent resistor and/or scorch the PCB, then you will KNOW about it - i.e. sparky fireworks and smoke (lasted about 5 seconds followed by another 5 seconds of smoke).
On the other hand I've also had an EL34 tube (again, bad tube) go molten-red plate, and all that was required was a quick (!) shut down followed by a chance of tube & fuse.
Good luck!
I've had a KT90 short out in a BAD way before, and if a tube is going down hard enough to burn out an adjacent resistor and/or scorch the PCB, then you will KNOW about it - i.e. sparky fireworks and smoke (lasted about 5 seconds followed by another 5 seconds of smoke).
On the other hand I've also had an EL34 tube (again, bad tube) go molten-red plate, and all that was required was a quick (!) shut down followed by a chance of tube & fuse.
Good luck!