For a reality check, went back to the Asimov's listing on the Submitting to the Black Hole page on Critters.org. Average response time is 63 days, with plenty of rejections well over 76 days. So I can put the possibility that my manuscript got lost in the mail or fell behind the desk out of my mind, along with this submission in general. I'm already working on 2 other sci-fi stories, with another one warming up in the bull pen. Plus the re-collection project.