Hey all, I've begun to rough out a bow of blackjack oak. This is my first bow I've built. I'm having a very hard time following a ring on the back of the bow. Wathching people chase a ring in osage for example seems very simple. However, this oak I am trying to use has quite tight rings and I cannot tell when I am cutting through rings. I know I have violated rings removing the bark but I cannot see any indication. There is no clear delineation between the growth rings. Is this normal for oak? How can I solve this issue? Thanks.