Thanks for the info cre.
Got the head off today, #10 and #14 head bolt stripped out and took forever to loosen, hex head bolts...never again...They were pretty seized up so I wasn't surprised they stripped, actually so f'in seized up had this happened:
Guy at Sears: "I've never seen a hex bit break clean in half like that"
Me: "You're welcome..."
Anyways here's the problem cylinder:
#6 on exhaust side and #5 was swollen but didn't blow. Ideas about why it happened? Running really rich? That black in the center is the only buildup on that cylinder, otherwise the rest is spotless. #1 is black as night which I'm assuming is "normal" buildup and brought me to the conclusion that #6 was running really rich.