If you are looking at the Z plate with the Z facing you, the lower right-hand hole will have some of the metal machined so that the silver is showing. Also, the upper right-hand threaded hole will have silver showing in the threaded area. This is done for grounding purposes. The grey ignition coil must ground all the way through to the main case in order for it to work properly. This is why you will notice some color missing on colored plates. They are not damaged.
I ordered an anodized Coil Mount “Z” Plate – why is there a silver spot where it looks like someone has drilled a hole in one of the corners?
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