Me again - did it! Getting the old one off was indeed the hardest part. The new one was easy to snap on - just watch the little tabs and make sure they're "tucked in" then just squeeze the whole thing together.
I just used a screwdriver to work my way from the outside towards the middle and eventually it came apart. Just a little scratch but the new cover hides it.
Took about 15 minutes and the wind deflector is much tighter now so I am off to test it out since its 73 degrees here and the sun is still shining!!!
Good luck!