It seems like a really smooth, linear 'chip', as some of the machining on the side of some of the lobes is uneven in different spots along the edges (just nowhere near as drastic) - so it's possible it was grinded, and I didn't notice on initial installation. I'm sure if the material is not compromised, it should be fine.
Thanks for your input
"It seems like a lot of bolts have been omitted... Judging by the amount of them in the 'random fasteners' bag. I am beginning to think my Z is being held together by zap straps"