[big deuce]

The bits were to help show the holes for the pic. I drilled the bottom hole first, and rotated the "plug" for lack of better words, 90 degrees for the second hole. In that position, I tried to slide a bit from the inside through into the tool and it would not line up. I strongly believe they are not in a "arch". I again rotated the fixture 180 degrees to look at the top hole, it did not match either. So, I figued if I can safely transfer directly from hole to plug for the bottom hole, I had better do the same for the other two.