LOL, just playing around. I'm an RF engineer, so I got a kick out of that.see...now my definition of resonance wasn't the answer you were looking for but yet you say you "have to wail the beejezus out of them to make them really sound like I want".
too loose of tuning does have a lot to do with it because you're fighting to bring out the tone of the drum instead of letting the head and the shell do the work for you.
i hope you understand my point a little better now.
I experienced the same probs. with the EC2's, I had to tune them sooooo low to get a good tone out of them and then it was like hitting a pillow. The G2's sing out just by looking at them compared to the EC2's
You know... I'm not at all sure about this... but I think Evans might be having issues with their Coated G2s lately. The last few I've bought have been pretty bad, and I've heard of a few other people on here having troubles. Maybe I'll shoot them a email, see what's up.
Edit: Ok, just sent them an email. We'll see what's happening.
As for the tuning, just keep fiddling with it, or check out the link to the DTB in my sig if nothing else works.