One other thing to try is to remove the master cylinder again and have your assistant push down on the brake pedal to expose the pushrod as it exits the servo
on the end of the pushrod there should be a little adjustment nut
try screwing this in a turn or two and put it all back together
this adjustment takes out free play at the pedal so its better to have a little bit of play rather than too tight
do you still need help?
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