I'm putting new brakes on my girlfriends '92 civic ex and I've run into a small problem. The fronts were easy, I used a c clamp to compress the piston to fit around the new pads, but that doesn't seem to be working for the backs. E-brake is off but it just won't budge. Any suggestions?

the backs should be drums correct? should be relativly the same as doing drums on your camaro there