So I got a new to me Mazda and it has a weird *** brake problem. They are very very hit and miss and I can't drive it. Sometimes the pedal is high and sometimes it's nonexistent. I have changed the following. Booster, master cylinder and abs module block or whatever it's called lol. When the pedal is dead it takes one pump and it's back but it's terrifying. Very inconsistent. I'm wondering if there is a special bleed procedure? Any help will be appreciated. Thank you.