Originally Posted by hyl
three things you need to check:
1) The pin that hold the metal and pad has to be free of glue residue and that the pads are not upside down meaning the top and bottom of the pad matches with the shape of the metal. if it is the pads itself will bind on that pin and it will be tight, it will be harder for it to slide.
2) make sure that the disc is seated straight on the three prong attached to the pulley. in time it will loosen up but for now check by rotating the shaft or rear wheel .look at it while rotating and you will see if you have a bind. if you have one try to move it around by a screwdriver against the pulley and twist gently until it is smooth.
3) please make sure that your brake post is not reversed. I meant that the flat side is facing the metal of the pads. good luck!!!! enjoy...
Check your instruction and you will see and understand what I am saying