blown 2 head gaskets

Thanks for all the replies, I knew I could get some great info from this site. I checked the dowel pins 1/4 inch extra depth in the head. I will check the TDC on #1 to confirm the damper did not move. The shop that built the motor thinks its not enough fuel in the front of the motor during the launch. They think it looks like the gaskets got hot and blew out. I'm thinking about trying a second fuel pump and regulator for the NOS at a higher pressure and maybe a larger fuel pill on the front NOS plate. I am now running the one Holly "blue" pump for everything, total H.P. between 550 and 575. The motor shop said the gasket may be the weak link and if I get a gasket to not blow it may take something else out harder and more money to fix.

Any thoughts on the low fuel and weak link theory?