As you build the two wing panels, save the root ribs for last. Leave the spars a little long at the root end of each panel. From the plan, mark the bottom spars where the two root ribs will go. Set the top spars, but do not glue them in until after you have set the root ribs.

Once you get both panels framed up, pin them down to your building board as if you were going to glue them together. You will not be able to bring them completely together becuse you left the spars a little longer. Make sure the panels are lined up.

Raise each wing tip off the board by placing a one inch block under the tip most rib. Install the two root ribs on the marks you made. With the wing tip blocked up the root ribs will be verticle and square to the surface of the table.

Make sure the root ribs are parallel with each other, in other words make sure they are the same distance apart.

Glue the root ribs in place. Once dry remove the panels from the board and cut or sand the spars flush with the ribs. Glue the top spars in place.

You are now ready to install a modified dihedral brace and glue the wing panels together. If done correctly, there will be no gap.

Glue the wing panels together before you sheet the wing center section so you can clamp the root ribs together along their length.

This is a long winded explanation for a simple procedure. I have build four of these planes and would be more than happy to answer your questions. Just shoot me an email.