Wow Tonya. Good catch on the 40. Kitties love keeping us on our toes, don't they? I love the pictures of your little man. Tiki is very handsome, indeed! Hoping you can get him better regulated soon.
i don't see it marked on your ss, but that is a good thing to note when you start a new pen/vial.
eta - i see the last new vial marked was in early sept and you've had a couple of vacations and a move since then - any chance the insulin was left out or banged around in those events? if this is new insulin, perhaps the old one had lost some potency in the 4 months.