Thanks for the answer.
"Is it a pulsating, like it's possibly out of true?" Thats how it felt. Pulsating.
Over email, he said that was now better. But would have to check if that's the case.
My thing is that if it's normal to have a sounds, then fine. But my overall impression as you said, is that they did a poor job installing things and they could be "patching" the consequence of a poor job. This obviously is not acceptable, especially with the amount of money I paid.