Got this done.
Quick tips if not already mentioned:
1) Drop the blower, not only because you should clean it out and inspect it, but so no shavings falls in.
2) Use a box cutter, its not thick plastic and it makes the cleanest lines IMO as you don't even have to get 100% through the plastic if its scored 3/4 of the way through that's enough to just push the plastic and it'll pop clean. I think a dremel would have been messy.
3) Make sure the airflow is correct orientation on the filter (down on mine).
4) On the door, it won't automatically "click" in place. You kind of have to push it on and then with a finger on the left and right sides of the door push in the tabs manually, then it finally clicks.