I have a 16 year old broodmare (saddlebred/Arab). I have been working with her under saddle. I am using a snaffle...new bit to me. I always used a curb bit when I had horses 20 years ago. Getting back into horses and was wondering if anyone has suggestions when training an older horse on the basics. She has good ground manners. Working her in the round ring for now as she has minimal "steerability" . Any suggestions would be great, thank you.