So this filly I'm breaking out takes the bit just fine, but chews and chews and chews and when she finally finishes chewing, she lets her tongue hang out and sometimes she just hangs her mouth open. Any pressure on the bit just makes her chew some more, and she ends up getting off focus and off balance when I ask her to move out on the longe line. This is only day 3 of me working with her, but I can see a bigger problem developing quickly. She's a quick filly, and she's only being broke to do trails and pleasure riding. I am sort of considering using a hackamore on her, because she just REALLY isn't liking this bit. Suggestions? She's almost 4. I'm using a full-cheek snaffle on her. I'd really like to soften her up but she just fights it SO much, she might be dangerous in the saddle (rearing, flipping, head tossing). Gahh!