Some questions of Editting Character

[WiiSK]

I don't know English so much.
So I'm sorry to use stange English.

I'm making some PSAs. And found problems.

1, I would like to remove left wing of Metaknight.
So I tried to remove by vertexing.
but some parts(near his nails) were not removed.

And I tried to move and rename bones in brawlbox.
It is same way to make Shadow'shair.
however, In the game, his textures stretch.

2,I would like to add GFX to C.Falcon'sFinalSmash.
I add instruction of GFX  in SubAction 1EF (VisualScene3).
But It freeze in stage loading screan.

If you know how to do, please tell me.

[GentlemanPotato]

1. Remove it with animations.
2. Dunno, I'm don't know PSA.