brake linkage in booster, broken?

[sactoC10]

Anyone ever have a problem with the linkage from the brake pedal lever (or whatever) as it rest/connects within then booster or behind the booster?

I've been struggling with sticking brakes, have bled the lines, put in new hoses up front, just put in a new master cylinder that was bench bled fine...

Yet I am not getting any pump from my pedal. It goes to the floor with ease, never building up any pressure. I could see that the master cyclinder was fine though when it was bench bled.

I am FRUSTRATED and TIRED. Help!!!