I have a '98 Integra LS that need the brakes replaced. I've already replaced the front brakes with no problems. However, the rear brakes have proven to be difficult. With the new pads in place, I can't fit the caliper over the pads to secure it in place. The caliper piston is in the way. I had the same problem with the front brakes but by loosening the bleed screw I was able to push the piston in enough to get the caliper over the pads. No such luck with the rear set. I have the groove in the caliper piston lined up with the notch on the pads too. How do I get the caliper piston pushed back in enough to get the caliper over the pads?

Many thanks.