Hey Greg,
sorry to hear 'bout the loss. Z's can be toughies for sure sometimes.
Now........John Brekken......haven't heard that name in a looooong time. He was also trying to sell me some adults a few years ago, but I shyed away (that, too, is another story...). I wonder if they are the same ones. Let's see some pics, and maybe even troubleshoot so that maybe next year you won't lose any at all. 
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Jerry Kruse
And God said, "Let there be zonata subspecies for all to ponder..."

