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Snape/Harry fic MIA - Balance Point by Nym (Sins of Omission series)

Someone on AO3 asked me for a copy of a "Snarry" fanfiction that I a) don't appear to have saved anywhere and b) honestly don't remember writing or posting at all!

It'd be about 20 years old, so circa 2004 (when my father died, possibly explaining the memory void.) It would've been published under my current Nym pseud; would've been archived on hp.pfen.net and maybe amplexus.org too; it's "NC-17"; and it's called Balance Point. It's a part of the Sins of Omission series that, for some reason I don't remember now, I evidently took out of the series and never put back? One contemporary reviewer mentions it being short and having Snape/Harry smut, and another places it as story #5 in the series, so after Relative.

Does anyone from ye olden days of HP fandom have a copy of Balance Point squirreled away? Or know of an alternate title I might've used? Apart from a couple of vague impressions of the setting, I am drawing a complete blank on this. Any help appreciated!