CBR Forum - Enthusiast forums for Honda CBR Owners

hey guys, i put on a new rear tire the other day and accidentally pressed the rear brake and it caused the piston to move out therfor not giving enough clearance to reinstall it... so i used a c-clamp to press the piston back slightly so it would fit. Now after everything is put back together, the rear brakes are not working at all. I feel slight pressure from the piston on the caliper if i feel very closely but other than that its not working. I checked fluid and tried bleeding them. Fluid comes out of the bleeder hole when i bleed the brake but it still doesnt add pressure, there are no leaks throughout the braking system... I also checked to make sure i was getting the full pull out of the mastercylinder and I am.... Im lost guys, help me out lol. thanks