In the margins of the g'mara are many notations indicating changes that various rabbis (Bach, G'ra, Tzon Kadashim, Shita M'kubetzes, etc.) made in the wording of the g'mara, seemingly to resolve difficulties that arise with the text. (Also there are some in other commentaries, not published in the margins.) Presumably these rabbis would maintain that the original text of the g'mara was what they amended it to and that it had gotten mangled over the years.
- Can someone confirm that last presumption ("these rabbis would maintain...") with a source?
- Have there been recent finds (more recent than the notations) of old manuscripts of the g'mara that 'proved' the notations right, i.e. that were worded in line with the notations?