Just one more thing: using a single 330 or 470 ohm resistor to lower the voltage still means that the output impedance is 330 or 470 ohm, not the proper 75 ohm. This shouldn’t damage your equipment, but is strictly speaking out-of-spec and can theoretically degrade the quality of the signal as it actually creates a low-pass filter with the parasitic capacitance of the traces and leads.
Recently I ordered many packapunch (full shielded) SCART cables on http://www.retrogamingcables.co.uk and it remoded the cross hatch pattern I had with my Snes and Gamecube (both PAL).
Unfortnately the seller didn’t sell packapunch Snes with composite video as sync but only with S-Video as sync. I wanted to use the Snes Scart cable for my N64 modded RGB, but the FRA version doesn’t ouput S-Video, only the EUR version.
So I asked the seller if he could connect Scart SYNC to pin 9 instead of pin 7 (Snes/N64 connector) when making the cable. He accepted!
Now my problem is solved! I don’t have any cross hatch pattern!