Still trying to figure out the vertical supports for the rails that go to the bow. I bought some clay at a hobby shop. It hardens when exposed to air. 1) In the Left picture: I made a mold where the 1st vertical support goes. 2) Then let it harden and sanded it to the approximate width, Middle picture. 3) Right picture shows the template I will use to file the complicated angle of the rails into the back of the vertical supports. First try I did, eyeballing it, was close but not good enough. Hope this method works better.