i have an 07 mustang and I was recently changing the rear brakes on it. when i took the calibers off in order to put them back on with the new brake pads i had to use the c-clamp to pust the caliber back to fit over the new pads. now my back brakes arent working at all. theres no air in the lines everything is fine. but i found out that apparently you have to use some certain tool to push the caliber back on some newer model cars. what should i do. did i royally screw my calibers up by using the c-clamp to push them back withouth the tool or can this be fixed easy without alot of work. need some input thanks.