@menachem-shmei The links don’t mention one word about לא תסור. A) They are discussing how to pasken for the public (כללי הוראה), not how to act personally. B) The רשב״א says להדיא that one may be חולק on a greater חכם if he has a ראיה. That’s מפורש. And the פוסקים extend this even further. See שאילת דוד.
@always_ask_questions Again, as long as you’re not ruling for others, you always have a right to follow your own opinion if you are confident you are right. The only exception is if you or you קהילה have universally accepted all of this Rabbi’s פסקים or if you actually went to the Rabbi and asked him for a פסק, which constitutes a commitment to follow his פסק. Confronting is only applicable when there is a ב״ד הגדול whom there is an obligation to follow blindly.