My sincerest apologies...!
I receive far more email than I can answer and left on a 5-week vacation with scores of unanswered email. Although I try to answer all that I can in the order received, the truth is I may never answer much of it. And if I do, there may a delay of several weeks to months. In any case, I am removing my email address until I return in mid-January. I do hope you will pardon me.
Jack Keller, December 1st, 2008