Forgive me if this is a dumb question, but the reality is that I don't know the answer and can't find it in the Sonerai plans nor on this forum, so I just gotta ask: What is the purpose for the angle attached to the main spar on both wings that is located between the 7th and 8th leading ribs and is marked "F" web? Have I missed something obvious? Please help! I'm on the verge of being ready to skin my wings, but don't want to cover them if I'm supposed to do something with this feature before moving on. Thanks in advance!