So I saw on this answer that you should be reposting after a misguided question, but you should edit with new information. I posted a question on SO and was asked for clarification (more data). When I followed up on it, I erroneously believed that in the process of providing the data, I had found the root cause of the problem, and elucidated this in my edit (the post is here for anyone interested).
However, I have since discovered that the only reason it seemed like the problem was fixed was due to an issue with scaling that I had overlooked. Now I still have my original question, but the question posted is quite stale and likely anyone who was paying attention to it considers it resolved. In this case, should I be re-posting it because my edit was misguided, or just post a second edit and hope for the best?