I am open to correction on this, but I also wonder.
I read the following in 2 Nephi 28:14:
They wear stiff necks and high heads; yea, and because of pride, and wickedness, and abominations, and whoredoms, they have all gone astray save it be a few, who are the humble followers of Christ; nevertheless, they are led, that in many instances they do err because they are taught by the precepts of men.
I know this chapter is specifically aimed at the "other" churches established in the last days and the troubles they face. Yet I wonder at the specific warning in this verse, as people being led by overzealous application of gospel aspects into error. That's aided by the reference to 2 Peter 3, and the warning against "steadfastness."
Peter and his contemporaries would have been innately familiar with the Law of Moses, and the strict application to that law that was common among many of the Jews. Too strict an application could lead to trouble, as shown by those who brought the adultress to Christ and demanded Jesus punish her according to the law. Jesus pointed toward a better way that did not ignore the violation of the law, but opened the door to repentance and eventual forgiveness, which is how I hoped that story played out.
I see a lot of "steadfastness" in my own church, and worry about it. It's easy to go beyond the mark in application of gospel tenets and forget that it is a gospel of joy, repentance, and forgiveness. A lot of people forget that judgment is the job of God, not us. Everyone has to be careful that they are led by Christ, not by the precepts of men that use Christian language to justify things that are not in harmony with the gospel.