right now i am having an issue with the box moving weirdly between the keyframes. on the frame where he lifts up the box a little bit(my f151)  and then comes back down(my f164), i am having an issue with the frame where he comes back down. in between that frame the hands are moving to the left and then back to the correct position on f164. the box in between the frame is also moving to the left and right. there is an influence on the box on f151 and 0 influence on f164. if i change the influence to 1 on that frame it still moves weirdly. also, the child of constraint I have for the root and chest will not let me change the influence and stays at 0 for the root and 1 for the chest. I get an error message if i try to change it that says cannot be keyframed, ensure it is not locked or sampled. i am not sure how to fix the movement of the hands and box in between the frames. i hope this makes sense.