I have a question i hope can be answered. I have a Jolida 202a that runs EL34's. I have wanting to runKT88/6550's. Has anyone ever changed out an EL34 for a KT88 if so did it work. Also, if I was to try this I would want to do it on the cheep just incase it didn't work. Any ideas for some really cheep KT88 or 6550?