Take a look at your video from the clinic. You'll notice that sometimes your arms are not symmetrical when you try to breathe, and your timing can be a bit off. The fact that you are lifting on one side but not the other tells me that the rest of the body is a little out of balance. Been trying the walk a little here and there to help? If so, try doing it a little more, but get the arms stroking towards the ceiling too. See if you are taking the head with the body on time or late when your right arm/leg strike through.