[Daves55Sedan]

You should notice that the adaptor plate is shaped such that in the middle of the plate, it is sunken down where the nut is in the middle of the fitting. there is a raised surface of the adapter plate where the filter gasket rests upon, so you should never experience a bottoming out of the metal part of the filter on that nut in the middle of the fitting.
There is a large round gasket between the adaptor plate and engine block. If that gasket is even slightly hanging out of the recess in the engine block, it is sure to leak.
The more recently manufactured adaptor plates from the repro parts suppliers are practically paper thin and easily bent when installing a new filter (which could put you closer to bottoming out the filter on the adapter fitting nut before the filter gasket can make a tight grip against the adaptor plate). If so, you might be able to get a genuine replacement somewhere.
The adaptor plate on my 292 is ancient and very thick metal. I use Motorcraft FL-1A filters and it never leaks.