In the pic it looks like the bow is bending on the bttm limb just down from the handle. To get the bttm limb bending correctly the upper limb will have to be less. That way the bttom limb will not have as much bending stress on it. Once you get the top limb less of wood the bttm limb will need to have the limb reduced beyond the area that is bending most, the areas just down from the handle. What you will be doing is taking wood off the top limb to allow you to tiller the bttm limb correctly. You may be taking 15-20# off your bow. If you cut off 3" off each end you may get a 45# bow. Your ntn length would be 64" which is okay for Hickory at low draw weights. Or, you can also steam a static recurve into the tips and get you another 5#. A 50# Hickory at 64 " ntn is not a bad bow to shoot. God bless.