Car problems

MOM STILL DRIVING MY DAD'S '86.I DO ALL OF THE MAINTENANCE

IMMA CJ JEEP GUY AND ANSWER THERE MOSTLY

NOT MEANING TO UPSET YOU OR ANYTHING, JUST WANT TO HELP!

WERE YOU 100% CONFIDENT INSTALLING THE BRAKES?

PRIMARY SHOE AND SECONDARY SHOES IN THE CORRECT POSITIONS?

DO YOU KNOW HOW TO CORRECTLY BLEED THE BRAKES?

DO YOU KNOW HOW TO CORRECTLY ADJUST YOUR REAR DRUM BRAKES?

BEFORE I SUGGEST A NEW MASTER CYLINDER,

LET'S SEE IF MAYBE I CAN HELP YOU WITH THE EZ STUFF 1ST

YOUR TURN, PLEASE ANSWER SO THAT I MIGHT KNOW WHICH DIRECTION TO APPROACH THIS.

I'M ON EASTERN TIME, BE UP A WHILE LONGER

THE MEDIC

If there's no leak anywhere and brake shoes are adjusted properly and continue to be spongy or sinks in-check the brake master cylinder could be leaking internally not holding pressure thru seals/cups