I was looking for a different topic and ran across your thread. I am no pitching expert on mechanics, ie breaking someone down is not my thing at all. So maybe if I point out a couple of things one of these guys can see if I'm full of it. But I felt inclined to comment because just something in your motion looked odd.
So here goes:
1. To me, you land open, and therefore your shoulders open and in a sense your arm lags ( I like a 45 degree foot landing) I know I have an issue with things taught for just velocity so grain of salt here.
2. Seems also like you land on what is a collapsing front leg, rather than firming up against it. That may throw your timing off as you are already starting your back bend due to collapsing.
3. Last thing, I like everything up until break, closed, balanced, strong... I don't know if it's the added "Pat" by taking the ball out then back into the glove then break,, but to me by the time your front leg lands you should have the ball up and ready to start forward, and you are still bring the ball around... Don't get me wrong I hate the short and strong thing, but again I think just a timing thing. Maybe a stronger leg drive would put the timing back?
So that last one isn't really helpful, but I do think you are right in the fact you are late.
Hope someone can take that and make sense of it, But at least maybe someone can rule all those things out if I'm entirely off my rocker.