Eddy RPM heads: Should I be concerned about this casting defect?

I agree its crap...for the money you spent seems they would send you a quality part,it may not hurt anything but it's blemished and a 2nd rate part,that's not quality by no means..send it back,but 1st I'd be on the phone raising hell and sending pics...no pride in workmanship and quality control is apparentely next to none...dont feel bad,get mad