Help pls with generic shooter ironbelly addition

Trying to add ironbeely weapons to generic shooter kit. I’m following this tutorial to the exact T with the ironbelly starter kit v2 I do everything in the video up to part 2. Half way thru the video he shows off the arms and the arms are in the m416 idle position while mine are in the pistols postion. If you can help me I will pay you please I don’t how much you’ll want I just need that one animation fix d all other animation are working

Video for reference