I had the same problem with a print. I mean the search spanned over weeks. I was looking for a pattern with an 8 inch repeat. I kept finding the 4 inch repeat in my stash but never the 8 inch. Then I went online and found out it only came in 4 inch. Sheesh! I was looking at it all the time and didn't realize it. I don't know where the 8 in repeat came in to play.
Of all the things I miss, I miss my mind the most.