Thank you for the insight into how the casting process works as it helps provide a visual as to what happened with this piece during production. While I was initially surprised that there couldn't be better quality control, regardless of where it was produced, it seems that it is actually quite common. I installed the center chunk using the factory 489 housing yesterday and should be back on the road soon. The old one will either be sent back or sold to my friend who is in need of it with a full disclosure so they are not surprised like I was. Thanks again guys!

I'll go with the latter ....

Housing are more than likely cast offshore ... thank the EPA for destroying manufacturing in this country for the most part.

I was getting ready to throw a bunch of housings in my scrap pile , maybe I'm going to second guess that now ...