Little planes are great for shaping those long leading edges arent they. I use a lot of pocket levels, bubble levels, and my home made incedence meters. I also made some squares used for supporting fuse sides when glueing it up. They're made out of two 5" x 2" x 1/2" bar stock aluminum. Big enough to set 10lb weights on to hold them in place and clamp the fuse sides to. Helps build straight and true.
Edwin