Is there any need for all 21 pins of a scart cable to be connected if I am using an RGB scart input on my TV (from a Pace Twin Freeview box)? If all 21 pins are not needed for this link could possible interference be eliminated by having a scart cable with a reduced number of active pins for RGB links only? Do such cables exist? I'd be interested to know what people think??? PS - I'd want the audio to go down the scart cable to but wouldn't need any composite links.