im not sure what is "precision cracked type". Let me explain what's in the red circle. There should be a hole in there, just like on the other side ( on the same photo). When assembling, the hole is supposed to be inserted by a sharp obtuse object which is part of the connecting rod. The purpose is to make the connecting rod and the cap to be positioned precisely. The "obtuse object" broke off from the connecting rod, so I circled it. hope that explains it. Is it called precision cracked type?