Mouth piece shape

[Turkinator]

What are your thoughts on the shape of the mouth piece? Round, flat, slanted, how does affect the way the call runs.

[Colt P]

I only use bones but I like them cut so there flat, I run a call without a stopper piece and get a lot more versatility from them that way! Anytime I need control from a stopper piece like when I cackle I use two fingers like Simon Everett!

[EZ]

I generally (almost always) keep the flat on my wingbone mouthpieces but I have been making some of the goose bone mouthpieces round and I like them both.