I'm assuming you have read the entire chapter of Romans 12?
"Therefore if thine enemy hunger, feed him; if he thirst, give him drink: for in so doing thou shalt heap coals of fire on his head." -- Romans 12:20
And please don't tell us "coals of fire" is a pleasant thing as some RC asserted last year. Here is what God means by "coals of fire."
Yea, he sent out his arrows, and scattered them; and he shot out lightnings, and discomfited them." -- Psalm 18:13-14"The LORD also thundered in the heavens, and the Highest gave his voice; hail stones and coals of fire.
Indeed I have. The question is: are you presuming to be the ones "feeding?" Because I've got to tell you, as a non-Catholic looking in: you and your pals are doing a really fine job with "haughty" and "wise in your own sight," and a damned poor job of "feeding."
And I presume that you have read the first chapter of 1 Corinthians:
I appeal to you, brothers, by the name of our Lord Jesus Christ, that all of you agree, and that there be no divisions among you, but that you be united in the same mind and the same judgment. For it has been reported to me by Chloe’s people that there is quarreling among you, my brothers. What I mean is that each one of you says, "I follow Paul," or "I follow Apollos," or "I follow Cephas," or "I follow Christ." Is Christ divided? Was Paul crucified for you? Or were you baptized in the name of Paul? I thank God that I baptized none of you except Crispus and Gaius, so that no one may say that you were baptized in my name. (I did baptize also the household of Stephanas. Beyond that, I do not know whether I baptized anyone else.) For Christ did not send me to baptize but to preach the gospel, and not with words of eloquent wisdom, lest the cross of Christ be emptied of its power. (1 Cor. 1:10-17)
St. Paul was writing about precisely the sort of activity you are engaging in. It is you who are actively working to divide the Body of Christ. Oh, yeah, you say you're working for right doctrine, but look at what you're sowing: pointless dissention.
To be more specific, you're bashing about with the kind of "knowledge" that Paul dismisses:
Now concerning food offered to idols: we know that "all of us possess knowledge." This "knowledge" puffs up, but love builds up. If anyone imagines that he knows something, he does not yet know as he ought to know. But if anyone loves God, he is known by God. (1 Cor. 8:1-3)
Loving God is key. Nothing else really matters. So unless you want to (falsely, and damnably) claim that Catholics don't love God, and are therefore not known by Him, perhaps your efforts might be better spent getting your own house in order.