Caustic or not, the Brake Fluid worked. Drove the car today for about 30 miles and it did fine.
Starting problems seem to now be due to no accelerator pump on the carb. You can pump it a zillion times and no spray. Car tries to start with choke, but not enough gas getting to it I think.
Going to get a carb rebuild kit next and try a cleanout and new accelerator pump.
Also got to install a new water pump now also, since mine has the dribbles.
Looks like I get to keep mine a Rotary for now......
I plan to still run some SeaFoam through it also once I get the gas level down to quarter tank again.