Well friend, it is possible that with the work you have done, the little flaw will disappear. I tell you that although I don't know much about automatic transmissions, I know that impurities in the oil can cause failures. I remember a friend topped up the oil level in his car, but he used poor quality oil, the oil level dropped due to a damaged sump, the truth is that the oil he added in less than two weeks caused a failure, after this I changed the oil for better quality ones, and the transmission improved, so automatic transmissions are very delicate, good friend, thanks for the interesting information that you bring us in each publication, regards.