Hi. I have a 1996 GC. Every time i go over a bump i get this mettal rattle noise from the rear. but if i touch the brake or even just slightly touch it it stops. i have taken the pads off they are copper greased and VGC but there is some play in them. im not to sure but the whole brake thing slightly moves (is this normal).... PLEASE HELP its driving me MAD!!!!!!!!:x