Did you use supports? The top mounts will just try to print in mid air as they just appear (i.e.they great an overhang that is too big. ). Try supports and see what happens.

Looking at this in S3d, there are also the construction artifacts that i noted in this thread ( http://3dprintboard.com/showthread.p...slicing-in-S3D ) but not in cura. I removed ideamaker from my system, so do not know what that layer looks like.