one of the volume faders crackles on mine and you have to tap it to make it work, any ideas where a replacement can be sourced, thanks.

Have you tried cleaning the slider with the spray cleaners?
Maplin dare I say it.. sellit at aboy a Fiver a can

Contact Cleaner I believe?

Drop me a PM danger mouse, if you still have problems after cleaning with contact cleaner

ill try cleaning it with that stuff and let you know,