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>Thank you very much for answering my question (both your messages). I will probably start a new thread to explain the reasons I asked the question (rather than hijacking Greg's thread).

Sure, I'm always happy to take part in any discussion (general or specific) on the topic.

Some of the stuff I did 5-10 years ago, I look at and say, "good god, what the hell was I thinking???" And other things I look at and say, "you know if I did this again today, I'd probably do it the same way". Usually a good methodology will last a long time.