In regards to 'ought amiss' versus 'aught amiss', 'ought amiss' is the older phrasing (and the one I learned, I'm not sure I'd seen 'aught amiss' until I double-checked my use of 'ought' yesterday) and Ceolmund isn't meant to be fully up to date on the current usage as he's very old. So Ceolmund using it isn't an error, but Timozel or Faraday using it would be.
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Huh, I had no idea! Nice touch.