There looks to be almost no flair to the front edge of the tree . To me, it looks really tight on the shoulder. Can you run your hand under it easily, or is it tight?
I have an endurance saddle that fits Mac just like that; too tight on the shoulder.
You do need to put them a little bit farther back because they don't have as much skirt to them , so unlike a western saddle, which as a couple of inches of skirt in front of the front edge of the tree itself, endurance saddles have very little skirt. The front edge you see is pretty much the edge of the tree itself, not the skirt.