Yes, and for that change I was able to recreate it using stereo sources rather than folding down the 5.1 version. It’s simply lifting a consonant from earlier in the scene.

The stereo should be identical in content to the 5.1, with one notable exception. The 1997 mix doesn’t always present 3PO’s dialogue very well, and at least on my setup I hear some distortion. You can hear it most clearly in Luke’s garage. It appears to be like that in every iteration of the 1997 SE mix that I have access to. So for the stereo mix, I use the 1993 mix for any scenes in which I can discern this distortion. (Can’t do much about it in the 5.1 mix because no 5.1 mix available is anywhere close enough to use for swaths of the film at a time.) This supposed issue appears to be an inevitable part of using 1997 as the main source, but at least the (PLII) stereo track is free of it.