Well, hopefully the Oven is pretty repeatable with something you can log in Session Recall. Imagine back in 1960 when cutting engineers would log their pultec settings with a set of written numbers. It’s seat of the pants, but you know the secret? Make sure the loudness matches. If you match the perceived loudness of the revision master to match that of version 1, any small differences in the Oven settings will very likely be “below the radar”. Other than that, good luck!