It's no big deal. I just wanted them to know what happened. The hammer fixed most of it, and for the most part the chipping paint doesn't show up in the pictures, just on my carpet if you move it around, change builds, etc. I just won't be able to use it for the mod I had in mind, as the amount of cutting would make the chassis far too weak, especially the doors.
I might just go back to my roots and scratch build a case like Project: Nightrain. The last two cases I either started working, or drew out the plan to work on have been let down by metal that is just too thin. I might just get some wood and build it from the ground up and toss a motherboard tray in.