Thanks for the link, I had not seen that. I am pretty sure all my turnouts are A's. the one I pictured above is an A.
Related to the gauge issue identified in the writeup, I have correctly re-gauged all my Lionel AF rolling stock wheels. From the factory they are about 1/10" too narrow. It was a lot of work that should not be necessary. SHS, MTH and AM have all the wheel sets correctly gauged.