I'm having a problem (and a solution) in Slic3r printing the foot set. It looks like the right "claw" has some inverted normals until I "split" the model. As soon as it's split, the normals return forward. Without splitting, the slicer acts like the right claw pieces don't exist, but the left ones show up normally.
Also, how did you design the custom supports? I would like to print the torso rotated 90 degrees (so the "nose" is up) with the supports on the back instead of the bottom, but my own supports fail to connect properly.