The threads on the steering stem of my A31 are worn to the point where the adjusting nuts do not touch them, let alone tighten up! Does anyone have a spare? This part may have been fitted to other models, so please search through your spares. The overall height is just under 9 inches and the width of the yoke is 3.25 inches. The part is shown in the attached image, and is stamped with an S and the words "A" QUALITY. I also need the bearing adjuster nut, bearing cover and chromed top nut.