It seems I have misunderstood your position. By break away denominations I mean the various denominations that have left Catholicism like protestants and sedevacantists. 

I ran out of characters but I meant the teachings of the Church as handed down from the apostles and the ecumenical councils. This is at least what Catholics affirm to when reciting the various creeds( Apostolic, Nicene, Athanasian, Tridentine and so on) .

As for right interpretation, isn't this  where the Church magisterium is needed? Is obedience not a virtue to strive for, the fall of man was rooted in disobedience. 

You mention that a wrong interpretation can come from a person of good faith, is it not better than in the same spirit of humility to at least try to understand and obey the hard sayings of the Church, if for no other virtue than the promises our Lord gave to the Church. In a sense the quality has been assured by God. 

If I still don't understand your position, forgive me.