I hit another snag at this stage. I hadn't ordered the power supply at the time I was making the templates for cutting out the opening for the power supply. Since I was also using an mATX power supply vs a regular sized one I had to make an educated guess on the size of the opening and cut the screw holes later.
And of course, I got it wrong. As you can see from the picture, the hole is too big, and the screw holes fall exactly on the corners of the box rather than outside of it.
What I wound up doing is basically cutting out the corners with my dremel and putting the screws in the slots. Having screws on each side prevents side to side motion and the power supply is held securely. Not a perfect solution, but it works.
Now I just had to test fit AGP and PCI cards. Thankfully they were dead on and went in with no trouble.
And that's it for this installment. Check back later for the third and final part, where we cover routering off the base, securing the cover, and removing scratches.