purchased a centric master cylinder for a 1969 Chr...

purchased a centric master cylinder for a 1969 Chrysler, brake pedal was never firm. bleed mc traditional way with1 person pumping other bleeding at wheel cylinder/clapier. tried gravity bleeding. tried pressure bleeding with compressed air. tried bleeding with vacuum pump at bleeder screws. always had marginal brake pedal. had power brake booster overhauled. still same mc issues. was told by rock auto that my order was over 100 days ago and that it was only warranty
for 90 days. was told that they have a rebuild kit for the mc,$21. a 47 year old car is not driven that much ,would like to have them send another. good prices,but not like dealing with your local parts dealer. MH.