Okay so, I bought my boy this fall knowing he was a rescue. My first goal was to get him gaining weight. Well, he's packing on the pounds now and needs to be ridden regularly after winter or I'm afraid he'll start to get a bit chubby. Right now he currently rides in a plain old western curb with a low-ish port and curb strap. I would love to have him going in a loose ring snaffle, but every time I've tried, he runs right through the bit and when I ask for direction change, etc. he just plows right on where he wants to go. This does not happen in the curb. I was wondering if anyone has any advice of where to start training (or re-training) him to accept a loose-ring snaffle.
If it matters, he is 16 years old, Morgan cross, was a lesson horse in his early years, but was bought at a going-out-of-business auction and was locked in a stall for 8 years and was physically abused. I don't blame him for not having perfect manners under saddle.