YehudahTzvi said: “In effect, you are placing a stumbling block in front of all of us in regard to tefillah if, in fact, it is the most accurate way to daven. Others ahve posted about the proper way to bow during oseh shalom and other correct ways of doing things. If we are not davening the most accurate nusach then I would hope you would enlighten us or at least let us know the Gadol Ha-Dor to whom you refer.”
The most accurate way for you to daven is the mesorah that you recieved from your father or rebbi. If it said in the Gemara, Shulchan Aruch, Rema, Shach, Taz, Magen Avraham, Aruch Hashulchan, Chacham Tzvi, and Mishna Berura that it’s assur to say a certain word in tefillah, but you were taught to say it, then I would advise you not to. However, there are always different opinions.
Let me give you some examples. The rav who made the shinuyim in the nusach held that you’re not supposed to say any Tehillim before saying Baruch She’amar. Therefore, I don’t say Mizmor Shir. He held you’re not supposed to say “Baruch hu uvaruch shemo.” He had many reasons for that. One reason was because it’s a hefsek. Some acharonim agree with that. Some disagree. But he had his own opinions, and Klal Yisroel is not bound to his shitos.
My point is, don’t worry about it. Do what your father does, unless it’s clearly against halacha.