Here's another one for DR Elmore and whoever else is game:
In The Music Man there are three short "76 Trombones Crossovers" that follow the library scene. In the published vocal score and the current MTI P/C score, they're in F, G-flat, and G, respectively -- but in the MTI full score and the parts, all three are in F. I naturally "assumed" (and we all know where that gets us) that the ascending keys are correct, but having suffered through a few execrable YouTube productions in which they've been performed both ways, I begin to wonder which is more correct, or better. (For this production, I care not. I just wonder.)