I agree you should reschool her.
I'd put her in a mullen mouth bit and teach her to be ridden, and to carry herself with no contact at all.
Riding her in a contact, as you would be inclined to do, will give her something to seek to lean on. If you ride her without a contact, what does she have to lean on? Also, if you have a contact, you would be inclined to give the rein, then retake it, if she leans, when actually, if you teach her to go forward without a contact, thefirst time you take up the rein, if she tries to lean then, you can take the rein until she softens, then give it and she should go on as before.
Giving the rein when she leans will only encourage her to lean when you take it up again.
Throwing away the contact until she learns to carry herself, then taking up the rein when it is needed, rather than having constant contact, and stopping any attempt to lean with solid hands until she softens, then giving at the instant she softens, is the correct way to discourage leaning on the bit.
22 June 2012 21:36