Hey, I have a 14 year old Draft cross. She is very forward, and we are still working on down transitions. I want to start the baby steps to riding on a long rein. She knows how to slow down based on my seat, but sometimes she doesn't listen. What I really want is her to go a steady speed at a loose rein. I have her on a d ring myler comfort snaffle. Can I do long rein stuff without a curb?