Power to manual brakes

3" above the gas pedal seems way too much. Insure the brake rod is fully seated in the MC piston, and the rubber bushing at the end is seated on the rod. The gas pedal could also be too low, especially if the connection at the carburetor isn't correct or factory.

I understand that high-school kids in Driver's Ed have been taught to drive with both feet since ~1990's. That is because few will ever touch a stick-shift, and they didn't even teach stick when I took it ~1974. One can react faster w/ 2 feet, but downside is someone might "ride the brake" or push both feet in an emergency. Some say that in most modern cars, the brakes can stall the engine, which wasn't generally true w/ drum brakes which would overheat sooner and fade.