4x-7x flying mount to WLK wing problem!help me!

[dafengqixi]

I have some problems
I put the 4x-7x flyying mounts model into the WLK inside.
But some mounts are strange
For example:
1.Heart of the Aspects, which the flapping frequency is too fast, like convulsions!
2.Corrupted Hippogryph it has wings, but its wings in flight without flapping!
3.Arcanist's Manasaber its wings are invisible, but it does not fly in flight, the wings do not appear

I did a lot of M2 testing
But always can not grasp the key
Key: the answer to the question???↓ ↓↓↓↓↓↓↓↓ Yes or no?:confused::confused:


Please help me to teach me how to solve this problem!
Thank you very much.

Pic:
Normal flying mounts:

Flying mounts with problems:
1.wings immobile for mount Forward flight

2.Not wings


please help me~~~ THKS