Shalom John, You wrote: "No amount of reasoning from the Scriptures seems to help..."
O' brother John - the reasoning found in this site through your hard work IS helping SO very much. When it reaches one, it reaches 10, then 100 (etc. etc. you get the picture.) Your work is like a modern day midrash. I think of how Paul opened up the Torah to the Gentiles...you are doing a similar thing today.
Be encouraged - Be encouraged...the LORD would have me say it again...be encouraged. I know it is hard work and I know the critical critics make it harder (sigh). Just keep doing your part and God will keep doing His part and open our minds :-)
Well done good and faithful servant/worshiper of Yah.