3-draw/bent "growl" - help?!!

[Marion.Spiers@xxxxxxxxxxxx]

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Hi

I have been trying to get this growl sound out of my A harps on a one-step 
bend. I can do it on the bent 2-draw on several different harps/keys. It 
sounds like the reeds fluttering kinda, a way kool sax-like effect, that 
would be useful to impress women! Seriously though, anyone mastered this 
one? I want to be able to hit it everytime. I can do it if I bend the 
three deeper on a run, but that's not the note I need to hit it with, and 
I want to sustain the note. Seems like a certain reed gap might help. 

thanks,
kcmojoe