My motor is very loud, it seems as there is something broken inside (clicking sound)... When I pedale without assistance (above 27 km/h or motor off), there is no sound from the motor... And the motor support level is sometimes very low. This could be a general problem with temperature...
No 100% sure, but there is no rattle when I pick up the back and drop it. I will get replaced my motor because the motor has its own issues, I will report if the motor was the problem.
I have a rattle too on my Levo Pro. Added the battery extender and took the battery out, still a rattle.
I think it is the cable (guides) in the top tube. Since S-Works user do have the same problem it's probably not the cable from the dropper post.
Maybe I will try to put a Procore inner tube...