You have the right sounds...
Listen to some sound files of live hens, and compare to yours... Recording is a great way to evaluate and learn from your own calling.
I grew up duck hunting, but my theory remains similar for each... I don't care how good the human caller is, I would rather imitate live birds... Download some sound files of live hens calling, imitate them, and then compare... That is how I learn the quickest...
And, when I am hunting, if I hear a dominant hen early on, I will pay attention to her cadence and tone, and try to emulate that later on after the hens have left those poor toms... Those early mornings when the toms are henned up, I tend to really pay attention to the hens... And I have found, that emulating them sometimes pizzes them off, and they might come looking for a fight (with a tom in tow).
I was out hunting a couple weeks ago, and heard one of the worst calls I have ever heard... No air control, calls cut off in mid note, way too raspy and throaty... That caller took a bird from right under me... Turned out to be a live hen.