It appears he is naturally a little high heeled, more so on the right front.
(basically a very mild club foot. )
The indicators of this are that the angle of growth of the heels is fairly vertical so the the ends of the heels are pretty well back near a line across the widest part of the frog although still tall. The bars are a little short (front to back length....not height) and the frog is also a little shorter than the other, because likely the coffin BONE is shorter too in that foot. All of those indicate a club foot.
so....if I were trimming him I would try these corrections, together :
1)roll off the very back of the heel some (a little roll to ease the landing so he can reach farther as the heels contact the ground .....not an overall lowering of heel
2) also roll across the end of the toe on the bottom to ease break-over to help speed up the front foot leaving the ground.
Do that on both front feet.
3) square or roll the toes on the hind feet.
That should help some.