As I had finished my project SE-580Z/Z-2/3/4, I thought I had finished here, then... I told myself: "this SE-580 vectorial playing has been funny while... uh, the SE-580 basis was not enough streamlined for my taste (in aesthetics)" but... why not improving that? I did it on the Zwilling 580Z basis into a half-streamlined SE-580Z-5 (to compare source and 'improved')...: