How to get multiple physics object to connect and work as one?

I tried child actors and sockets but the objects keep falling apart.

Also if the meshes overlap it causes unstable physics (lots of uneven shaking)

By using the Physical Constraint Actor I made my multi-mesh actor being “one”, look the unreal doc about that PhysicalConstraintActor component for more details, but you can lock the transform of the children and ignore the collisions between parents and children. (you must make one constraint for each other mesh, for each mesh, so Mesh x Mesh Components to add)

You must also attach the children to the parent, and enable collision plus Simulate Physics before adding the Constraint.

Thanks now, I am half way there. Just got to fix the spinning.

Ok forgot to update, found the setting box in the blueprint. All fixed and working!