Don't worry dude, I was just trying to help you appreciate why its difficult for someone who doesn't know what your trying to say. They can't just make something when they don't know what it is, however simple.
It's not a hard mod at all, you can buy acrylic cut to size although acrylic fabrication is not a problem

. Some adhesives or screws and cut out the side panel how you want it. Making another side panel, especially to match the case would be serious effort so I would suggest modding yours, do it yourself or find someone. Perhaps you could get a replacement from fractal to try it with if your worried. If it's just a simple cut acrylic to size job then there is no need for any CAD tbh.
It's not that long ago I was in the same position with my 550D wanting a window for it, I got a modder to do it for me, was happy with it but decided one day I could get some satisfaction out of doing it myself. So I got another side panel and tried my hand at dremeling and with some patience, the right tools and actually no practice at all I did it.
I'm sure you can find someone closer to home than me but if you want any help with it let me know. There are plenty on the forums who will help too if they can stand you
lol jk
JR