This will probably seem like a dumb question. I have never used a breast strap before. Recently I bought a saddle that came w/ one. So the first thing I had to do was search for information on the proper adjusment. So I think I got it right, kind of loose, w/ room in front to easily put my fist between the strap & my horse's chest. The only thing is that when my horse stretches his neck, for example, to get a drink, it seems he's really pushing against the straps. Is this normal?