Master Cylinder Drum Question

[mercado]

Hey guys, i did a search but didn't find anything.
So the problem is i put a new master cylinder but when i put the brake pedal down/plunger in, its stiff going down but then whren i release it it does not come back up and stays down uless i grab and lift up.
It was bench bled, no power booster, drums all around, duel master cylinder, 1967 A100 van 318
I shouldn't have to bleed evey drum when i replace master cylinder right? is that my problem?
Hey thanks guys i appreciate your help.
ps when i put the pedel down/plunger in, i can see the tiny hole open, shouldn't that allow the brake fluid to go to wheel cylinder?

[712edf]

I believe the whole system must be bled.

Bucky

[69a100]

If it's stiff going down and have to pull it up there's something not right, you shouldn't have to do that. Is it the same looking M/C? I did mine a few months ago and got lucky that I didn't have to bleed the system. Maybe just loosen the bolts some on the m/c and see what happens, maybe not set right? Hard to say without looking at it.