need your input!

[strokin white]

ok, I am having trouble with my rear brakes, on my 03 250. I have replaced both calipers and outer hoses, and the calipers are still hanging up and I mean really hanging up. I have checked that my e brake is functioning properly and it is, but I don't know what next. I read a post that kind of relates, and my next thought is hydro booster? any help would be greatly appreciated.

 

[JLDickmon]

belay that..
drop hose from the frame to the axle

 

[Bad Night]

How about the line from the body down to the rear end ? If not that , proportioning valve ? Thats all that is left . I don't think the master cylinder would do that . I know if rubber lines are stretched the can kinda smash like chinese finger locks and hold pressure . To check crack open brake lines at specific locations until pressure relieves .