Installed Strut beam. Wow...modifying that little washer was tricky. Happy with how the holes lined up. Manual is missing instructions to drill up to 1/4��les on spars and strut beam attach angles.....took a little research to ensure this was the correct step. Don`t want to drill the wrong size holes in the spars! These little bits of missing information really add up. I have a buddy building a Carbon Cub currently and this is what separates a `frustration free` build (Carbon Cub) vs. being frustrated (Sportsman) on a regular basis because the Assy. Manual has not been updated for 16 years! I`m still happy with the product thus far...just venting a little after a lot of 'research��eded when a simple statement in the manual would have resolved the issue.