This is kind of sad. I sell these heads and I use them on engines I build, I NEVER have any issues with ANYTHING.. Every once in a while, some other engine builder will call me and tell me something like the studs being drill ed off, or something like that, but I never see. it AFR is a great place to work with, and I am sure they will resolve your problems. Did you buy your heads directly from them, or through a dealer ??

JOE SHERMAN RACING ENGINES