That business card thingy? Do you mean just lie it on the head by the rim? Interesting....
A few have said this, I tune until the drum sings. I gues each has one, or more(?) tones where they just sing. Gees, if we talk in the room you can hear the resonance from the drums. May not be the best for studio work but they sure sound good.
In another post I bing this up as the snare is WAY too boomy...
I also have a 16x16 floor tom that won't resonate for anything. strange....
DenS