Quote Originally Posted by iceburn View Post
BUT i was UPSET (moreover my first time and Demonac will be laffing and saying i told you so...) that i've snapped Sinnertwin's head while trying to uncombine it... i'm lucky too that this pic was taken before it snapped
Welcome to the club! I've gone through 2 or 3 Sinnertwins, and I should have remembered to tell you about it.
For the next one, here's the fix: Disassemble the toy and file down either the sides of the chest cavity, or the sides of the head piece.