So some background on the problem. One day parking brake stopped working. If you pull the cable it looks like everything is working on the caliper but it does not grab. I said f-it and didnt worry about it. About 2-3 rides later the rear brake got real weak. It will slow you down but will not lock up the wheels. So i went and put new pads on(old ones were worn about half way) and bleed the brakes. If a push the rear brake the piston will come out and go back in. The problem is the piston needs to be out about a 1/4 more. So the pads dont even touch the rotor. What am i overlooking was planning on riding today.