Biting
Harvey is willing to take the bit but isn’t enthusiastic about it. Could this mean he doesn’t like this bit or that it hurts him in some way? Possibly. Since it has done nothing but sit in his mouth it seems unlikely. What seems more likely to me is that he has had unpleasant experiences or even that he’s used to having it pulled on instead of taking it the way my horses do. I can hold him still and put it on. That doesn’t mean I want to.
Here he is learning position and how to come get his bridle. We are targeting the bit with his mouth. Eventually we will be targeting the inside of his mouth. In the end everything comes down to targeting 
🙂
Once he is taking the bit I will watch to make sure there isn’t anything about the bit itself that is bothering him. He will get a say in what he gets ridden in.