  If a 2-knot group other than $\mathrm{Z}[\frac12]\rtimes\mathbb{Z}$ is almost
coherent and has a torsion-free abelian normal subgroup $A$ of rank 1 which is
not finitely generated then $A$ meets nontrivially every subgroup which is not
locally free, and $A/A\cap\pi''$ is finite cyclic, of odd order.
