recently, on one forum or another, SDH had posted a comment regarding his health issues - while i cannot quote him - the gist was that he was paying the price for too many years of exposure to fumes, solvents, dust and other air born contaminants, with disregard for his basic personal protection. i don't imagine that he was alone in doing so.

another sign of expertise, from a different angle.... wisdom from a genuine craftsman, as useful as any of his other instructions.

"it's a poor sort of memory that only works backwards."
lewis carroll, Alice in Wonderland