Um, Sorry to be the one with the bad news MUTT, but, maybe you might ought to turn around next time you get outside. There's a bit of green tinge on your northern side...
just kdding, it's almost all the way around now....
OK, sorry, I'm just still goofy after a good day, anyways, I like the idea Larry had, as long as you keep the main barrel long enough. I would personally start with what I figure was almost too long of a barrel and then work it down slowly till i found the sound I wanted. I hope it helps. Good luck, I know you'll figure it out and have a great call made and a happy customer.