So as it turns out, you DO need to put some grease on the ball joints on the Ferrari F430 when replacing them. I just missed that step in the service manual, but my wonderful viewers made comments asking why I wasn’t putting in grease. I was suspicious that you should add grease, but my old ball joints clearly had no grease.
I found the spot in the service manual that calls for Fiat Tutella Zeta 2 grease, which I could not find in the US, so I just ordered some synthetic grease that should do the job. I had to remove the control arms again, pop off the ball joint boots, apply the grease, then reinstall everything and torque it down.
Here’s the video of the ball joint installation: https://youtu.be/TuEO4mjfPig