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" As crazy as it might seem it is possible that it is spraying so much oil around inside that the rings can't wipe it clean. I have other engines with oil pressure systems and have never had a problem with them so this is an unknown."This was the direction I was thinking in. I can't imagine that you have suddenly become unable to make good fitting pistons, bores and rings so the next step was to look for too much oil reaching the bores
George,Have you been able make any more progress on your Flathead? Edison once said that learning about the things that don't work is as much progress as learning about the things that do. - Terry