LineTrace and Merging Animations both don't work correctly?

So, I made a basic shooting game. I have two problems with the game.
A. The Bullet Trace works fine, except when I look in the air the line trace bullet system doesn’t work.

B. When I perform my CrouchADS animation, I merged the animations together and the gun is turned to the side. I don’t know why it does this.

I have left a link to a video. Help is appreciated. Thanks so much community!

Link: UE4 Error - YouTube