mine used a 120vdc rail, 6.8k plate and cathode resistors, 82 ohm common cathode resistor un bypassed....really liked it...the cathode follower resistor not connected to the common cathode resistor...i made and sold lots of these, even better liked than the aikido...
do you mean, you not use the positive feedback. do you use 6n23p? or other type. how value capacitor that you parallel with 82R.?