Cracked Guide Boss

[BOOT]

I recently bought some BLEM BPE cylinder heads, the ad said these are blems because they were decked too much and the chambers are 60-62cc. I noticed a flaw on one of the heads deck and the merchant exchanged it for another head. The replacement head I received has a crack that runs down the intake guide boss, I'll include a picture. I've sent the picture to a few guys more experienced with cylinder heads but figured I might as well see what people on here say as well.

[BOOT]

Almost forgot, I made a video about the BPE heads and I'm working on one about the replacement atm. I'll include a link for those who may be interested.