Just to muddy the waters a little more. I took my 2018 F3L in for the recall. They tested/measured it for movement and determined it was bad. NO RED DUST THOUGH. They replaced the original pulley with a new white one during the recall period. Once the new final fix was available they replaced the white one with the new silver one with the washer and and bolt. During this whole time I made several long multiday trips with no noise or vibration or anything else out of the ordinary. I could not tell any difference. Did they finally resolve the issue? I have no idea. Not sure if they know either.