I just finished a build with the Enthoo Pro case. I had an issue with adding extra fans to the hard drive cages. There is is built in screw holes to accomodate fans, but i ran into a problem with the support bracket that is between the them. The holes were to close to the bracket and wouldn't allow me to mount a fan there. I had to remove the bracket and bend the sides of it a bit to make sufficient room.
Is this a common problem? Did I buy the wrong fans for this application. I bought (Phanteks PH-F120XP_BK 120mm PWM Case Fan)