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Reporting question for Vacuum Tube - 5AR4 / GZ34, JJ Electronics

Product:
Vacuum Tube - 5AR4 / GZ34, JJ Electronics

Question:
I'm trying to determine if my rectifier tube is bad, or is it the power transformer? I'm getting 300 VAC on pins 4 & 6 of my 5AR4 and B+1 measures 350Volts. I've new filter caps and new resistors on the all the caps in the dog house. Any ideas? I do not have a tube tester. Any help would be appreciated. If it's not the rectifier, I guess the power transformer? Funny, I had higher than normal voltages on V1 pin 2 + pin 6 and so on up the circuit., now it is lower than normal, 180, should be 210. I have a Super Reverb. thanks and Happy New Year!!