Chatter will not go away. Just get used to it.

The shuddering has gone away for me, but yes, it did take a while. Don't sweat it.
Originally posted by 4banganda5spd:
i am really hoping this thing grabs alot harder than before.
I wish I had a better before/after feeling. I was without my car for 7 weeks, and damn near forgot how my car felt before.
But, it does grab well. I don't think you'll be disappointed.