I'm not asking anything of you Chuck!
I'm saying that's what i have done
There is no code in the cron.php script which sends an email to the user who placed the ad if the auction does not meet their reserve price.
The only code in your script that deals with that scenario is:
Content visible to verified customers only.
Which just automatically relists the item with $duration added to the days, no emails get sent to anyone from what i can see.