[GkornM]

We were able to fairly easily cut the angle by attaching the board that needed the angle to on of our steps while the step was standing on end. We then clamped a fence to the top of the up turned step for the appropriate off set for the angle. You then set a circular saw to 16 degrees from the vertical and you run it along the attached piece with another part of the step supporting the saw and giving it an even surface to run along. See attached photos. This was suggested by our swiggity swaggity mentor Sr. Verde.