Need Head Help?

Welcome, this sites cool I've only been on a few days but hey I learn quick. I have a head question, WHY ARE ALL OF MY DAMN MAGNUM HEADS CRACKED!?!?!?!??? I've been plannin this swap for a long time now, but no, both sets I have are cracked right between valves WTF

-sorry, that coupled with my layoff and my Grandpa's house gettin broken into and robbed last night has not made for a very good week thus far:angry7: