That reminds me of a story about the noda beyehudah(i think..could have been someone else). He was first rov in a small town, and when asked about saying “av harachaman” on a certain shabbos, he replied by saying that there were different minhagim and that he didn’t know which minhag the shul had been following. The townspeople were horrified that their new rov couldn’t answer a shailoh about something as simple as the recitation of “av horachaman”, so they fired him. He went on to become extremely famous and once spoke in a town that was close to the first place he was a rov. Some of the yidden from that town heard that one of the gedolei hador was nearby, so they came to hear him. They were shocked to see it was their former rov, now venerated rightfully as a gadol beyisroel. They asked him how he got to where he is, and he said “the same av horachaman who took me out of your town put me here”
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