I’ve been working with my horse on saddling and i’ve noticed that if i use a padded blanket with my horses saddle it slipped horribly. Like it slips back and to the side. I’ve been using just a saddle blanket, a double weave to exact. Now i don’t ride him he is still in training but i do saddle him and work him in the saddle with just the saddle blanket. I have two saddles that have wide gullets but im still worried that neither fit. I’ve noticed that when he sweats there is dry spots at the gullet area but only sometimes not every time. I have a nice padded pad but it slips when he only trots for a few seconds. The blanket keeps it in place but it does leave a small dry spot every once in a while. He is very much a barrel shaped horse and has a short flat back. What should i do? Should i use the padded pad when i do start riding or look into another saddle? Of course i do not want him in pain for my pleasure.