& this is with you hand turning the wheel backwards/no pedal input correct? that makes me think something is fubared with the assy on the backing plate: loose holddown springs/brake nails wrong ones (too long) sumpin ain't kosher cuz it (something) is too loose or too big or too small or installed wrong. we'll get it! (might take us awhile). when you turn backwards it is shifting something that should be secure.