Alto and Tenor Saxes Are LOUD! (Timbres Of Heaven)

Okay so I'm using the Timbres Of Heaven soundfont because it's amazing, but there's one problem. The saxophone parts are super loud when they start the note, but if it's a long note, it fades to the same dynamic as the other instruments. For example, the part that the sax has is marked off at mp just like all the other instruments, but the sax sticks out so loud and then fades off... Is there a way to fix this issue without switching soundfonts? Or maybe without marking a different dynamic than the rest of the instruments? Thanks!