I have bad brakes?

Dang you got a problem. You've covered about everything I can think of. The only other thing I could suggest is to make sure you adjusted the tensioner on all 4 sets, thats pretty much the only other thing I can come up with. Will get back if I can figure something else out..

As you apply pressure to the pedal, the first stage of the travel of the pedal is the rear brakes starting to engage and as you continue to press down ,the mid point of travel, the front brakes start to engage from that point the proportioning valve makes the distribution of the brake fluid even to all wheels and your able to stop good. To achive this you are going to have to re- prime your master cylinder, adjust the rear brake shoes and bleed the entire system. Thats the only way to do the job right.

Either you have a loose brake line or you did not bleed the lines properly and in the correct order. Don't forget, the master cylinder has to be bled before any of the other lines. Check online or buy a service manual to to perform these actions.

You need to adjust your breaks when you bleed them. When you get ready to bleed the breaks you have to tighten them up first. Pump the breaks with the truck on till they tighten up you can feel it the more you pump. Once you have tighned them up bleed the breaks, this should adjust the pressure applied by your pedal. You will probably have to add more break fluid to your system if the breaks wont get tight when you pump them.

There IS still air in the lines.

Bleed it again.

Or, you have rear drum brakes that need to be adjusted.

ADDED:

Did you bench bleed the maser cylinder before you installed it? You needed to......

then u should get them fixed before anythng happens dude

idk. sorry. but scotty 2 hotty? do you go to baldi M.S? cuz i used to call my old friend that and i was wondering if it was him