Even though I pull the front of my dressage saddle pad all the way up into the pommel of my saddle, I notice at some point while riding (walk/trot) that the pad is flat against my horse's withers and there's not much I can about it while still sitting in the saddle. Pretty much have to dismount, un-girth and pull it back up.
I'm assuming that it's an undesirable and is applying undue pressure on my horse.
So my question is, how can I prevent it? Do I need a different pad?
It's an Ecole by Roma Double Diamond Quilt and an Isabell Wintec: