I got a problem.
When i use the full Bend Will shout on him and attempt to mount him, i get stuck at the ground while he flies away. I can't control where he goes since I can't see where he is.
( I'm probably using a outdated version of Dragonborn, Steam's being buggy, I also use the Unofficial Dragonborn Patch at the Nexus.)
A posible solution is to go to Data/Meshes/actor/Dragon/charaterassets then delete the skeleton.nif...