well my HTPC loop decided to spring a drip, its a EK A120 aluminum kit, the spc-60 pump body is injection mold plastic so im thinking it just has to much flex or is not pefectly done. tried fitting from EK (aluminum one and a regular 3/8 barb), bitspower, Koolance and alphacool all with the same result, a drip between the fitting o-ring and pump body. 
beside a AIO i have never had a leak that wasnt my own boneheaded fault.

 

notfordman
Is the o-ring ok? that sux! Does the fitting bottom properly without hitting the pump base? 

yep o-ring looks perfect, even tried changing it to no avail. plenty of thread left so its not bottoming out, the pump body looks to be a little uneven, maybe the plastic they use on these MX series stuff isnt that firm. have a support ticket in with ek now, only had this setup since christmas and its my HTPC so not a lot of use on it.

one rma later and its fixed, the replacement one is acatel and not IM plastic and feels much more solid.