The two inline holes are not for a kadee, its for some sort of insert. The spacing is too close together. I found an article where someone is replacing the atlas o coupler with kadees and I think this is the piece that I did not get. https://rices-rails.blogspot.c...ees-on-berwicks.html
I think the best option for me is drill and tap two new holes slightly back of the existing ones. I have not done that yet, so it will be a new adventure. I suppose I could make a shim that would need to be drilled through anchor the screw, but I think that might be more a headache than its worth.
