That's one bad thing about the simulator... It won't snap on you like a real Decathlon will.

Now, don't get me wrong, I LOVE decathlons! When you are up there flying around, it is one of the nicest planes ever!

The problem is that they have a very short tail. This means that the tail doesn't have much leverage. So unless you have a good amount of airflow over the empennage, it just won't have the authority it needs to stay in the back where it belongs.