Abstract: The present invention provides a system for adjusting a position of a post within a pile. The system includes a post including a vertical groove on one side and a vertical groove on another side for accommodating a sound wall panel. The system also includes a pile including a vertical bore into which the post is inserted. A set of three screws are spaced evenly around an exterior circumference of the post near a bottom of the post, wherein at least one screw contacts an interior circumference of the bore so as to adjust a position of the post within the bore. The system further includes a collar for fastening the post to a top of the pile at an opening of the bore.