Sept Electronics World mag (just here in Australia, so prob been in UK for 6 weeks) has advert selling many curtis chips (not 3340, but others cem 3310,20, 30, 50, 60, 65,71, 73, 74, 79, 78, 81,82, 87, 89, 94, 96, and cem5510. http://www.sysonic.com price? "from 9.90 UK pound" paul perry melbourne australia