With the aft rivet holes now open I could clamp the rib in location and match drill the forward holes through the bulkhead.
Then I pulled the assembly off the bench and set it on it's side on the floor. With the help of some clamps I got the centerline pretty well lined up in the skin holes and drilled them all.
I then repeated the process for the left side. It went quicker.
Using the angle drill to match drill the rib from the bulkhead
With the mid fuselage assembly on it's side I match drilled the rib web through the skin holes
