Yikes! I’m still relatively new to Fender’s RI amps and I have a 2013 PRRI on the old bench. With a NOS RCA 5AR4, the 6V6 plates are at 440v. With NOS GE 6V6’s, the ma’s are up to 38! I dropped a NOS 5V4 into the rectifier slot and got the plates down to 430v around 28ma. With the 5V4 and the old EH 6V6’s the plates are down to 420v @ 19ma. What a hostile environment for a 6v6! Anyone else have to wrestle these little RI’s into a more hospitable range?