I didn't want to split the upper/lower wing surface horizontally so I cut the grooves in the upper surface.
Applied pressure reduces the size of the grooves filled with revell filler . Left over night the bowing is cured .
Cheers Howard
I didn't want to split the upper/lower wing surface horizontally so I cut the grooves in the upper surface.
What's a little dihedral between friends. No, don't answer that!