Step 8. When originally building the HS, I put the notches in but only 1/4” deep as opposed to the 5/16” called for in the SB. I used a 1/4” diameter round file and deepened all four notches to 5/16”, then deburred the edges. (Photo 1)
Step 9. New stabilizer; no cracks found.
Step 10. I marked the HS-702 spar trim on the upper flanges, per figure 4. I need some smaller cutoff wheels than I have before I attempt these cuts. After this is done, I’ll flip the stabilizer over and do the lower flanges. (Photo 2)