That last pic helps a lot. Thanks for finding it. I think it shows two things. One is that there is a gap, which is probably unavoidable (and maybe not a bad thing). The other thing is that the back plate in the pic is more curved below the slots for the straps than mine. That seems to make a difference on the size of the gap. That pics shows quite the curve lower on the back plate.
I think bending the hooks is a bad idea.
I'm just going to move ahead with the hook installation as planned and live with the gap unless anyone else has an idea. It will be covered on one side by the cloak anyway.