I got 5, though it was nearly last one in. Had to run through my list of 3-letter terms for "jaw" (verb). Not *that* rare a word by crossword standards and I'd seen it but forgotten.
24 was iffy, I got most of the way by parsing but had to google the answer.
26d rather clever IMO, but being American and unfamiliar with the word I had to burn a lot of time.
Great grid structure, but borderline "fair" due to exotica. I enjoyed it after some initial aggravation.