Re: RG320FM String Change = Fret Buzz. How?
Some acoustic buzz is normal if you want to have your action set up as low as possible coz generally, you're picking the strings harder in order to hear it. If your guitar sounds just fine when you pick it with your normal stroke through an amp, then its fine. Dont mess with the truss rod, you only adjust it when your neck relief isnt proper, in this case, the factory setup is 9-42 and you're still using the same gauge so no need to adjust the rod.
If you're too concern about the buzz, raise the action fairly to your likings till the buzz minimalize/gone. If you want to adjust your intonation, you gotta check your 12th fret and compare it with your open string note/12th fret harmonic.