You have a PM.

Spoke to J. J. about the bushings. He agrees that they're normally blue.

Look, the usual reaction to this type of striker access is almost always exactly as yours. Westley used the same a lot early on. J. J. mentioned how often people say "look at this lovely Westley that somebody screwed up", even though it's entirely original. Keep in mind that the original dovetails could have been poorly replaced due to gas erosion on the face, a problem that was common with early Cordite ammo, especially Eley Brothers.