Ironically enough, after making a cough-induced jab at On Spec's long wait times, I received a letter back from them. Yes, another rejection - another rejection followed by the requisite letter explaining how they receive 100 manuscripts a month and how all the workers at On Spec on volunteers, which explains why it took them four months to get back to me.
On the PLUS side, though, they had a very nice typed note at the bottom (which I nearly missed, because the On Spec rejection letter has a very bizarre space format), which offered criticism about very specific parts of "Whiff," followed by an offer to look at my story again if I rewrote it.
Now, hey! I seem to have been very lucky with my rejection letters lately - I haven't received all that many, but many of them have had encouraging notes on them entreating me to send more things. And On Spec, which receives 100 manuscripts a month, has stated that they would be willing to give my manuscript another go if I tightened it up a bit.
If I keeping working steadily through the holidays, by January, I might have a fleet of stories to send out - not only the rewrite of "Whiff," but also "Parasite: A Love Story," and "House Hunting" (now that it's been rejected for the MacTaggart Award). Better get to work!