ssotimpre,
My Cooke score shows three notes for the flute in measure 53 of the Finale: G-natural (eighth note), A-flat (eighth note), and F-natural (dotted half note). In the Telarc recording of Mazzetti II, I hear—again in concert pitch—G-natural, A-natural, and F-natural, meaning the second note is being played a half-step too high. Is this what you're hearing?
In addition, I hear a very-poorly-executed splice right at the barline between measures 52 and 53. To solve other problems, they may have had to go to an alternate take that hadn't been fully vetted.
I checked the Slatkin recording of Mazzetti I; it doesn't show this anomaly and is in agreement with the Cooke score.
James