Yesterday I made the centre stand stop. The cb550 uses a rubber bit on the mufflers to provide a stop for the centre stand while it's in the up position, and I won't have the original mufflers on this bike obviously so I needed to fabricate something else. I used a rubber appliance foot that screws into a tab on the frame, and a corresponding pad welded on the centre stand. It makes a nice, solid, quiet stop for the stand. I did run out of argon while welding though, so I may finish it with a stick.