I think it is an outstanding puzzle, and the awkward nature of some the clues must be acceptable given the large number of constraints placed upon them by the setter.
However, I still cannot see the definition in 6D. The answer is fully checked and I know the misprinted letter. However, the first three words are adequate wordplay, so the definition must come from the final word, which is presumably split in two?
I must be missing something obvious, since nobody else has mentioned this.