Has calculated the percent difference between cathode resistor method and transformer shunt method? I’ve heard that cathode resistor method always measures on the low side - question is, how low. I can’t do transformer shunt method due to not having a multimeter with 3 decimal places. Appreciate the input. I’ve got a ‘61 Super measuring 450v and 40ma on one 5881 and 46ma (80%) on the other with cathode resistor method. Definitely running the ragged edge but it just sounds so damn good clean.