Step 15. Drew rivet lines on the front side of the doublers. (Photo 1)
Step 16. Radiused the top outboard edges of the doublers to fit in the upper radius of the HS-405 spars. (Photo 1)
Step 17. Before proceeding with fitting and marking the doublers, I removed the remnants of the original rivets from the HS-710 and HS-714 angles. (Photo 2)
