Just so you know, operating spinning drives this way is a bad idea. If the platters are spinning and the drive tips over, the rotation of the drives resists the movement. This gyroscopic force is enough for the platters to touch the heads which are flying a tiny distance above the platter. Obviously this is a bad thing and will damage the drives.
A quick fix is to just lay them flat or fix both of them together so they have a more stable base to stand on. Putting it in an enclosure is even better.
In trouble shooting it always important to answer at least these questions when asking for help:
This will help other people help you quickly and efficiently. This will greatly improve your chance of other people being able to help you, or you being able to help yourself.