The crank nose band allows for more 'jaw shut' power than a standard, and adding it with a flash means chances are that mouth won't be opening a whole lot whether the horse likes it or not. It's basic understanding of the pulley action. I'm not accusing the OP of misusing tack, but frankly such equipment isn't necessary when the standard version is available IMO, often with a cheaper price. With heavy padding, if the nose band is fit tight the padding can push the cheek into the teeth causing irritation.
"The trouble with the world is that the stupid are certain and the intelligent are full of doubt"
Last edited by roro; 05-21-2010 at 10:34 PM.