Some of the parts I have with micro usb have slots for the position pins. I don't know if they are overlapping holes or little bitty router bits that create them. I know that little holes that are too small for a drill bit are drilled with laser drills. I don't know if slots can be cutout with lasers. The slot for micro usb are plated holes so they need to be done before the router process. There are China fab houses that will make them... I just don't know how they are made. You could just make a hole 1.8 mm and fill it up with solder... Or maybe drill two holes close to each other and cut the center out to connect the holes when they come back from the fab house.
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