Seems EK are recalling all predator units now.
''Dear customer
We are really sorry for the inconvenience but sadly all the predator units manufactured before January 4th 2016 are being recalled, so please contact your seller of the unit to get a replacement, Revision 1.1.
We have noticed that Predator units manufactured before that date are critical for leaks and to avoid any damage to your hardware, we have decided to recall them. Please note that only a small percentage of units are effected by this, but it's better to be safe than sorry, so please follow the instructions.
If you have bought it directly from our web shop, than please file a RMA case at our rma site
http://ekwb.com/rma/ and our engineers will contact you asap and arrange a pickup and a replacement for you.
And if you bought it from one of our resellers, than please contact them and arrange to get a replacement from them.
Again, we sincerely apologize for the inconvenience and thank you for understanding.''