Well, first thing to check is saddle fit. If the saddle doesn't fit, it hurts him, and if it hurts him, he's not going to move. Not many people actually know how to fit a saddle properly, so please put the saddle on him (if it's english, don't put the pad on. If it's western, use the pad) and take photos. We don't need the girth on, though you can put the girth on for a FEW photos if you'd like.
We need a full side view (don't stand at an angle), and then we want a view of his shoulder (to see how the front edge fits his shoulder but DON'T get too close. We need to see most of the front of the horse in order to figure out how it sits). And then we want a back view (stand LEVEL with the saddle, same height). A front view would be nice as well, if you can get it.
Post those and we can help you decide if the saddle fits.
Then look at the bridle. If few people know how to fit a saddle correctly, even fewer people can fit a bridle properly. Some pics of the bridle on him would be nice.