[Lynn]

You may be correct William. Although from that pic it is difficult to tell if that is a run, or if someone spilled some brake fluid when filling it up. Not saying it isn't a run. Besides, even if the passages were not machined, you would have a problem with paint in the reservoir. Paint and brake fluid don't get along very well.

The finishes I have seen certainly don't look like other dipped components, like the cross member or motor mount stands. I have found dried puddles of paint on those, and would expect the same on something as oddly shaped as a master cyl.