Animation with part attached to rig not working correctly

The tablet is welded to the left arm via Motor6D but I’m not what property to manipulate to get the expected result.

Here you can see the rig:

Here you can see the animation playing and the tablet flying off (probably due to offset)

I welded the tablet to the rig in-game with a C1 which I read from the original rig by using part1.CFrame:ToObjectSpace(part0.CFrame) which I thought would give me the expected result.

Haven’t figured out why yet, bump