main spar? no it wasnt... TE spar yes if you look very closly wher the aileron cutout makes the 90 degree. it is broken there... the 2 small streamers you see are really useless.. they are so soft you could cut them in half with your fingernail...,, same with TE and ribs.. ehen the put the wing together.. they just laid the stuff out.. and then used the " HOT GLUE" style glue but instead of gluing the part in.. they just ran beads beside the parts.... so every rib is only glued on 1 side "the ones that are glued".. I have bought reject ARFs that have better work in them.. as a matter of fact i have one of the reject yaks they were unloading on E-bay and the quality of construction is 5 stars above this cap.. http://www.rcuniverse.com/forum/fb.asp?m=3311895