TAF came back to me regarding 2 issues, so I could correct them and deburr all parts.
The 2 brackets of rib 7 should have a 2 degrees bend, the left had only 1 degree. I clamped the bracket into the vice with some wooden support and gave a little more bend:
TAF advised to up-size the 2 misaligned holes to 4,9 mm:
Curving of the flanges:
All done, ready for primer:
