well Jake, we may have different takes or views on this but I know what you mean. I generated that 80’s buzz by doing it in the 80’s! No just kidding. To be honest I never changed anything when I changed from my Berg to Guardala. Your mp and reed aren’t going to give you that buzz sound, it’s all generated by the way you blow. Practice growling and experiment with the amount of humming… more hum means more growl. I certainly don’t growl 24/7 so I cut back on the humming to almost zero to give it that slight buzz you’re talking about. Try playing around with it but go to the extreme in both directions to see if it starts working for you.