need brake help

[vardenafil]

ok so i checked the rod length and it seemed ok. i pressure bled with my motive bleeder and i out a quart through each wheel. i have a decent pedal now. i cant panic stop with the truck nut it stops good. the rear wheels lock up if i smash the pedal too hard. i may need a adjustable valve for the rears. i did notice that one of the rear calipers from lug nut 4x4 is funky. the caliper is supposed to spin one way to adjust and the opposite way to set the parking brake. the drivers caliper i can adjust the arm to wear it barely moves against the stop. the passenger rear caliper the arm keeps spinning it does not have a catch to it. it spins both ways. so i think lug nut gave me a defective caliper? or am i doing something wrong?