Thick Surface Problem Stopped

Hello

I wanted to extrude a surface via the Thick Surface tool but as Franck Ceroux was able to explain to me, it's not always possible because of the edges.

However, I don't see how to have a clean extrusion that respects my original design.

The trailing edge is very coarse (because extruded outwards) while I need to have a thin trailing edge (extruded inwards).

Can you help me modify the attached wing to CATPart V5 6R2016? Please

Thank you


wing_parta.1.catpart