The plane is in the final stage of delicate trimming.
I have already adjusted the angles of flaps to counteract a minute warp in the wing (60.75" span).
Len,
This angular adjustment was very small and I had to make six flights, mostly level, and level inverted at 5 feet for the person watching the plane to finally say "outside tip down in level flight and up in level inverted but I can barely notice this". We were lucky with the wind - it was early in the morning and almost no wind so all that was possible finally to see. I was flying on the previous day with the wind 5-6 knots and there was no way for anybody to see this.
Ken,
After the flaps angular adjustment, I started flying selected maneuvers. Specifically: squares, triangles, horizontal eights, and my favorite - the hourglass. In some of the 120 and 90-degrees corners, I have noticed a very slight tendency to hinge. Like you pointed out, this is the main reason I raised the question about the tab on the TE of the outboard flap.
I have already added such a tab but I made only three flights with it and the wind was 8 knots and a bit gusty so...I have to wait for ideal conditions to see the difference, if any.
Howard,
It may be also too subtle for me. If I cannot see and feel the difference in windless weather, I will keep changing the tab's position and size until I find improvement.
Thank you for your thoughts and comments.
P.S: good luck to those who will compete in Muncie. I was planning to fly in the advanced group but Canadians are still stuck on the north of the border, probably until June 21.