Jeff, in the Kitte (I only ever heard of Jitte as a Shotokan Kata) you can clearly see Marks 'ankle-difficulties'. I don't think he isn't trying.
Mark, your kata look powerfull and of good pace. I have to agree with Jeff on the loose fingers in the Kaishu/Shuto handforms. They are really easily damaged. Also tightening the hand/fingers make a better striking surface. Followed up grabbing motions aren't affected, since these grabbing motions are fast enough.