DC - hope I didnt confuse you with pics and questions from different bows in one post... the hole bow is pic 1 which is 37mm narrow - whereas pics 2 and 3 belong to the other, recurved bow -the recurved one is wide and without irregularities, 48mm-30mm...but indeed has quite short working limbs...let's see what happens.
But further narrowing could really be an option to consider for the hole stave, which has classic longbow design.
by the way: does anyone have a good
www.adress for a metric/inch converter?