Thanks for responding, Timothy.
Well, I had read that in a blog or forum post and thought that I had tried changing the resampling to bilinear; but at the time, it didn't work. I just now tried changing the resampling to bilinear and changed no other settings, and it worked perfectly. I must have previously been troubleshooting too many variables at once and continued to see a resolution loss...
Thank you very much for the assistance!