I think you are right with this. But since the upper limb has some knots and is a little heavier (slower) than the lower limb, i think its ok. The arrows are leaving the bow the way they are supposed to
@Beadman. bow lenght is 1,52m (unbraced), bow weight is 555g.
@Steve: Sorry, I cant follow
The Knots are lined up because they grew lined up