One of the best Mods for the Sig Lt-40 is the addition of some tri stock to the fin to give it more strenght. It really helps. I had a very bad crash that Killed my Lt-40. I had not used any tri stock to attach the fin and the crash knocked it iff in such a away as not to damage it. It broke off the plane at the epoxy joint.
I had used 3 min epoxy. In building my new plane I have reinforced the LT-40 in all the areas that it failed and I aded the Tri stock to the fin.

My lt-40 is already built. In order to add tri-stock would I need to sand the area (for epoxy 'beads') and remove the covering and then recover it after adding the stock?

Wayne

Yes all you have to do is cut the momokote a little bit and then
epoxy the tri stock to the body of th plane and the fin and then yo can recover it . The Mod will really add strenght to this area.