I recently replaced the rear pads with my fingers crossed that it would help the hand brake, but nothing!
The mechanical component of the caliper doesnt appear to actuate the pads onto the disc, Will bleeding the brakes fix this or is the mech part actually broken, I'm assusming it's broken.
Have you taken it to a Mitsubishi dealership? The mechanics will mostlikely have dealt with the setup before and if you perhaps reasembled it incorectly it may be a simple problem that is easily fixed........... or not!