Multiply angle energy term by angle2rad term; this matches the angle numerical and analytical gradients which only really matters when the gradients are mixed.  Would like to find where the factor comes from instead of adding it in an ad hoc fasion.  Maybe the analytical gradient needs to be divided by the same term instead to get the physical result?
Multiply angle energy term by angle2rad term; this matches the angle numerical and analytical gradients which only really matters when the gradients are mixed.  Would like to find where the factor comes from instead of adding it in an ad hoc fasion.  Maybe the analytical gradient needs to be divided by the same term instead to get the physical result?

ajkerr0/kappa,ajkerr0/kappa