If one were to accidentally run a Lonestar Classic w/ EL34s installed, but with the bias selector positioned for 6L6's, how fast could damage occur? I swapped out my tubes to try EL34s (as the amp has had 6L6s since I purchased it and I was just curious), and powered the amp on, and probably played both channels for 2 minutes or so until it suddenly hit me that I hadn't changed the bias selector. I turned it right off, and switched the bias selector to EL34s. I played it for just a little longer, and I don't hear any terrible noises or notice anything just blatantly wrong, but I'm wondering now if I've still damaged something, or caused undue wear on certain components.