Tech Talk is a 'busy' forum. Lots of stuff repeats and that is not a problem. Could Tech Talk be sub divided into sections - for example - similar to but not necessarily the same as Caterham On-Line catalogue headings i.e Major/Prime Heading would be Tech Talk, sub groups, Engine, Bodywork, Cooling, Chassis etc and so on. That way re-finding topics would be easier (historical stuff) getting to a search might be easier by going straight to the sub section you want.