This is the S-Video adapter I just made for the Commodore monitor. First time using heat shrink tubing as well, overall a satisfying build. I'm getting better at soldering tiny wires.
When using the Commodore's separate Y/C input with my DTV converter box, dot crawl is gone of course but the picture is slightly darker. That is okay since I'd always turn down the brightness a bit when using American NTSC to get those deeper blacks. With S-Video the black is dark enough on the default brightness. Does it lack a pedestal?