I am in the process of restoring a 79 Spider, I am working on the brakes, I have installed all new front and back rotors pads and calipers, I also installed a new master cylinder. I am now in the process of bleeding them out, the petal is getting a little stiffer but still spongie, the front ones bled like I normally have seen, but i couldn't get any fluid out of the rear bleeders. I thought maybe the weight distribution mechanism was bad, so i bypassed it, that didn't help, I then thought the T on top of the rear axle was clogged so i opened it up and was able to get a steady stream out there, so i removed the new rear caliper and was able to get fluid out of the line but was able to hold my finger over the hose while the petal was pushed and it didn't push it off, can someone help me in knowing why i cant get these rear brakes to bled?