[starterman99]

Check if the mster cylinder cap has a vent or vent hole is plugged. Had this on an old f**d years ago. After all new brake system it would drag after 10 mile drive. ajusted and reajusted several times . I back the shoes off then had low pedal . then it sat outside in sun for a little while and the brake lights lit up after it built pressure. the new cap on the master did not have vent hole replaced with the old cap problem solved.