late post on this but.....
go to your local auto parts store, get your self some brake lube auto zone maybe others will have small packets for like 1.29? ( we have it at auto zone where i work) tell them you need brake lube for calipers/ slides and guide pins, take your caliper bolts out make sure there clean and lube them up, also lube the slides on the caliper, and put some on the back of the pads where they meet the caliper, and if you can get some in where the lever pushed the button on the master cyl in,
that will insure your set up is lubes and will always move freely