Upd. Given the number of comments reporting the fit is too snug, let me just make it very clear from the start. I personally printed about two dozens of them on my MKIIIs and used them on multiple Skadis boards bought in different countries throughout years. I had no problem putting it together. However, if you have a problem printing it on your printer of choice and fitting it into the board you have, there's a Fusion file in the downloads and you are absolutely free to modify it the way it works for you. You can even submit it as a remix.

Tested with Xbox 360 and One, Playstation Dualshock 3 and 4, Nintendo Pro controller, Steam controller, NVidia controller and SteelSeries Nimbus.