Assembled the left HS ribs and match drilled to the spars. After deburring, I attached the HS-601 skin to the frame.
Next I oriented and clamped the HS404, 405 ribs. I opted to drill the HS404 aft flange holes based on their position on that flange rather than coming through from the back and hope I drilled straight. HS405 I drilled from the back using the locations mentioned above.
When I drilled the top hole on HS405 and preserved the edge distance on the flange, I landed right on the edge distance limit on HS710 in the front. Discussed the location of the hole with Van's Aircraft and it is not an issue.
HS with skin
HS404/702/710/714 from front. Note the top hole location.
