I'm really liking the new fork. Bike definitely feels more stable on hill descents - nice bonus!
On a side note, I cut up the old fork. It had a lot of manufacturing bladder junk inside. I think some of that might have gotten loose and caused the rattle.
In any case, I'm very impressed with how strong the fork was. It took me a while to cut it up and banging it with a sledge hammer (yeah, I was curious) had little impact. The strength of quality carbon fiber parts really is something!