After viewing your video, I came to a couple of conclusions.
You are pretty smooth and have solid fundamentals. I like your inside out armswing. That helps you stay under and behind the ball.
I had a hard time believing your axis measurements were 2 1/4 over and 3/8 up.
It is important to remember though, that anything is possible. Look at Matt O'Grady and Mike Fagan.
Matt's PAP is 2 7/8 over and like 7/8 up the last time I checked. Mike's PAP is 3 1/2 over and 1 1/2 up.
As long as your doing the proper procedure, there is no reason why it should be inaccurate. I like using an armadillo to find my PAP and I check it every 6 months because sight changes will generally occur.
I know I haven't really given you a solid answer but if you have any more questions just as or send me a message. I work in two pro shops on Long Island. I'm very qualified when it comes to this kind of stuff.
-Darren
P.S. keep representing for the left side! (I'm a lefty too!)