Those are some serious hooks! Pretty good draw weight on a narrow (for bl) stave. But as Simon and Del say, it is more efficient if the string comes off at the last part of the draw. You can shorten them a bit and maybe heat them slightly to reduce the angle?
I just bent one hook of another black locust myself. I love how springy black locust feels!
Mmh, sorry to disagree Leon, Jeff had underlays glued on. Applying heat there would attack the glue joint. Making them a bit shorter will be saving mass. Best would be learn to draw that thing a bit further like Del suggested.
Anyways, if you decide to shorten the hooks, try to get it chronoed before and after.
And make another BL bow, shorter but wider limbs and shorter hooks with 50 -60° angle and you will see the difference in performance.