For those who have not read this thread, I can assume they have been, in the past, mis-informed, but those that have now done so, are un-informed. (apologies to Mark Twain for bastardising his quote).
I concur with LeadSled and Creampuff. Perhaps their offerings should be heeded. Both are aware of my intimate knowledge of schedule 4, as it was then, and how something simple became so convoluted and subsequently mutated into something that nobody fully understands and drives normal people to despair.
And while this fire burns, Nero fiddles!