I, as an Ashkenazic Jew, am one of many with a family history of pronouncing the last Hebrew letter as saf (e.g. Berashis), however, growing up, I was often exposed to Israeli culture and their pronunciation of the letter as taf. The latter is what I adopted from an early age. However, recently, viewing the traditional Ashkenazic pronunciation via my grandparents, I began to wonder if I should change my pronunciation. Therefore, should I continue saying taf, as I am accustomed to, or begin saying saf, as my family tradition?
It is recommended to attempt to change back to your ancestral pronunciation and reintroduce it into your family and progeny.