To help with self-leveling, I sank an eye-bolt into the garage wall at mid frame height. I then use a tie down strap through this and the frame as a safety to enables the bike to balance upright. Won't topple to the right side, and if it rocks the other way, it's back on the side stand. As an aside, to stop it rocking back on to the stand i put a small block of polystyrene under the stand foot
I also use the strap when putting the bike up on the rear paddock stand as extra insurance..