I would agree to put the cable on the LT-40 stab and fin. Mine did not have it and now I no longer have this plane. I put them on all of my planes now. Before putting them on my Super Sportster, I sheared both sides of the stabilizer in a high speed dive (no longer do that). Here is a link from tower for a nice cable setup http://www2.towerhobbies.com/cgi-bin...?&I=LXFV30&P=0