Yeah, well, he figured that wouldn't be that easy, either. As for the pieces... It's not really hard to put together at this point. Much as he's not used to being human in general, he knows his heart in here isn't one. Not with the constant tick-tick-ticking. Maybe there's a reason for that.

"You mean these." He taps his chest where a heart should be but there's something ticking away instead. Are the keys to this door really inside people?