I have a 3CX1000A7 that I want to grid drive, but have little circuit info available here. Most all my references have grounded-grid designs.Also I want to run a 304TL grid-driven.
I would try to drive the grid using something like a MFJ small power antenna tuner if you don't want to take the time to build a grid circuit or just use a 50 ohm non inductive resistor from the grid to ground and drive the grid that way. You may not have to worry about neutralization in the latter configuration. My 2 cents worth.