Locate one of the wing posts and place the tissue tube on it. Place a small droplet of glue on the tissue tube, then position it on the body so that the back of the tube is in line with the leading edge wing mark (see photo below), which is 1.0" for the Division C model. Apply some accelerator and let it dry for a minute. Be very careful not to get superglue between the wing post and the tissue tube socket or inside the tissue tube, otherwise the post will be glued to the tube and you will not be able to pull it out.

Lay the wing on top of the body, and slide it up so it hits the leading edge wing post. Then take a pen and mark the trailing edge of the wing on the top of the body.

Extend the line down the side of the body as shown below. This is the location of the rear wingpost socket.

Glue the other wingpost/tissue tube just behind of the line you just created. You want to make sure that the wingposts are parallel with each other and not crooked.

This is what it should look like when you are done. Not like this.