hey i have heard of people filing down the reeds on their calls, what exactly does this does, make it sound deeper? I would like to be able to make more subtle sounds with less air when the geese are approaching. Whats the technique to doing this and is there anything else i can do to make my call more effective. I have a Buck gardner Canadian hammer 2, and a quack head. I would like to get a nice achrylic call but this it what i have for now. please lemme know what i don't. thanks