[jaykay]

I had the new style put in....Intially there were problems. It blew out after a track day which was very disconcerting. Nothing to do but drop the tranny. Upon inspection apparently this was due to incorrect installation depth. Normally they just don't come out on their own.

Thereafter I have had no issues with the new type of seal in my older car. If the install is done correctly there is no need to fear the new type....I say this even after my close call experience.

Just thinking aloud
Can you post a picture of the flaw? What is the order magnitude of its depth? Does it go from one edge of the seal bore to the other or is it confined to the middle. If the flaw is: very fine and properly dressed such that no damage to the seal will occur on installation; there is no leak path from one end of the bore to the other, then perhaps you are okay.