Heres a brain teaser (for me at least). I've got a Tweed Deluxe with bigger Iron and 6L6's in it. It has Mercury Magnetic Trannies in it. Can it be converted to EL34's? I know the pins are different. Is it possable to rewire the socket and then Bias it up for 34s or not? It also has a Bias Pot installed when it was built that has a fairly good range on it.