how long is the glue joint on that siyah?  on the last one i built months ago, at the very end of the limb, i rasped off some wood to remove weight from the end of the limb.  since thats where the biggest part of the siyah is, i figured it didnt matter. then i wrapped it.  to me it looked a bit better too.  also, did you make the siyah triangular in shape?