they bow is bending too much in the handle it would seem,, a picutre with the bow drawn would take some of the guess work out for us,,
smooth on,, is a fine glue and should work if any glue will work,, but maybe tiller the bow to not bend in the handle and reduce the weight,,,, I understand you have a draw and weight in mind,, but the handel section is not desigined properly for that, you might consider makeing some changes,,