Shouldering the Burden

In the ongoing effort to improve my running, during the week I visited my physio. He filmed me walking and running, and we then reviewed the footage to see where I had problems.
When I was walking, my gait was OK. The physio could see where the hip exercises I had been doing were helping, and I was generally pretty balanced. Moving into a jog though, and the issues started to become apparent. I was dropping in my hips, so that rather using momentum and swinging my legs through to run, I was forced to push up on every step, greatly increasing the effort required. I was also carrying my right arm very low. However, it was when I tried to push into a slightly faster run that the extent of how many deficits I have became clear.
Rather than using my arms to rotate and counter-rotate my torso to assist in running, my right shoulder protracts and I don't counter-rotate. This throws my whole gait out of whack, so now it looks like I've got to get back to working on my shoulder as well as my core, hip and glutes. There's a long way to go yet.