Have you found anything that has helped? If it is scar tissue, I would think using a roller would help break that up. I’ve had scar tissue in my calf from a broken bone a long time ago and while it was very painful to roll out it has certainly helped. I would also want to try setting the hips back into the socket as well using the banded distractions. Also I would work upstream and downstream – which would mean working on your tight calves (downstream) and smash your “stomach” and QL (low back).