Bump to add my two cents.
I just mounted two JetFlo 120's onto my Hyper 212 EVO. In truth, it is not a perfect fit. The heads on the screws that come with the JetFlo 120's are too large and will collide with the heatsink fins when mounted onto the clips that come with the Hyper 212 EVO. Unable to find appropriate flathead screws (at least in a timely manner), I chose to file the heads down until they were low-profile enough to mount cleanly onto the Hyper 212 EVO fin-block. I have seen CM Felinni's solutions (having discussed this with him at CM), but I prefer not to permanently mar the heatsink fins. As an extra note, filing the heads down enough to clear the heatsink fins did not alter the integrity of the Philips socket, as I was able to thread the screws into the brand new JetFlo 120's without issue.
P.S. I realize that the JetFlo 120's weren't really designed for placement onto a Hyper 212 cooler, but I wanted to pick up a couple of good 120 mm fans that would expectedly last long enough and be of good enough caliber that I can also use them down the road when I get the itch to purchase a more aggressive CPU cooler.