I checked with Bob and indeed rear spar ribs 12, 13 and 15 have no spacer bars. Number 14 does because of the outboard aileron hinge. Also one error I found in the prints is on Sheet #7, the radius at the wing attach bolt hole of the rear spar end fitting should be .437 not .500. Bob said that .500 should be OK but he is not sure if the larger size would fit the fuselage rear spar attach fitting without interference. I did not see this error listed in the Safety and Engineering Notices and Changes.
Gerry
Patrol #30
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