Fig31
With paper airplanes their CG does not move, so they are fine without a tail. Another way is to use light weight `stuff' to make the bird. Comes with all needed parts including the allen wrench to adjust the dampening. Installing was a snap.

SHADES
SUIT
PADS
HANDLES
ZIPPERS
SHOES
HELMET
SPOILER
AERO
CUPS
IMPORTANT
CHAT ROOM
ROLL TEXT
MAIL
POSTCARD