You are a spy....ROFLMAO....such a bad bad boy. You should be whipped with secret recipe trade marked magnet wire....blindfolded of course so you won't try to reverse engineer it and copy it:)Riddle me this, why are we so concerned with grid choke/center tapped choke inductance and what happens when a signal drives the grid positive but yet IT coupling is advised for these same tubes that need a low value grid leak resistor....and they sometimes are operated in clas A2.
Russ