UMMMMMM.. yeah. the most common reason the rear rotors are so hard to get off is 1. make sure the E-brake is not SET. 2. most often the E-BRAKE shoes are seated very close to the inner drum surface of the rotor. there is ussually a small lip formed from the drum pads wearing down the surface of the E-brake inner drum causing the the shoes and rotor to hang up. making it very difficult to remove..