Quote Originally Posted by green91 View Post
The parking break isn't hydraulic on this car, its cable driven and goes to a lever on the caliper.

How many miles have you put on the pads? It will take some time for rear pads to set in before they hold well unforunately. Did you resurface the rotors? If not, it will take a significantly longer time for the pads to bed with the rotors since they arent flat.

It wouldnt hurt to pump the brakes firmly to make sure the pistons have extended properly in the rear, and also pull/release the parking brake handle numerous times.
This. Pump the brake a few times to extend the pistons on both sides.