Im currently working on a black walnut selfbow,cut from a sapling that was in my yard. I laid tge limb design out by measuring from center because of the turns in the stave so from the pith 1 inch each side etc.. my question is this,the thickness of the edges of the limbs is different because of the natural shape of the stave.will this affect anything and should i narrow the limbs to try to even things out?