Steve Ray has a list of 35 loaded Questions for "Bible Christians" (quotation marks his)(link to the whole list). This is number 17/35. I'm trying to provide the answers in a common format, for easy reference.
17) Who may authoritatively arbitrate between Christians who claim to be led by the Holy Spirit into mutually contradictory interpretations of the Bible?
2) The Elders/Church
1) What is meant by "authoritatively" is not spelled out. The Scripture is the infallible authority in the sense of being a standard. But the elders/church are a fallible authority in the sense of being judges who apply the infallible standard.
2) There's no reason to suppose that Christians are going to resolve all their disputes in this life. God hasn't promised that.
3) The Roman Catholic church also can't promise that it will resolve all the disputes.
4) The fact that the people claim to be "led by the Holy Spirit" is really irrelevant to the question. However, of course, the Holy Spirit will not lead two Christians into contradictory views.