The firewall is disassembled and I’m deburring parts. I’ve said it before…if you have a Dremel tool, you gotta have a #500 abrasive wheel for it. It’s a 1″ Scotchbrite 7A Medium wheel, and is the absolute berries for deburring in close quarters. Can’t always find ’em in the big box hardware stores, I find mine in the local neighborhood hardware stores. I’m sure you can order them online, too.