Had this on mine, check if the parking brake cable is keeping it from moving back. My cable was not sliding freely when the brake was released.
Missed the part where you said both sides.....may need to check the parking brake adjuster, that it isn't over tightend....
Choptop, Vertical Door Hinges
Lowered Suspension w/ 13" Brake Disk
CarPC - WinXP Pro (GT Sport Edition)
+ a lot more.....
[This message has been edited by Orig88GT-NC (edited 04-18-2014).]