i noticed that in the building instructions also. i have also seen a few fly. so i decided to sit down and modify it a little bit. the vertical wing supports were widened and i drilled holes in certian spot to lighten the total weight of the plane. im usint an e flite 400 920 kv, 12x6 prop not sure if i will stay with that one, e flight s75 servos thunder power 3 cell 850 mah lipo and e flite speed control with a gws reciever, total weight, 14 oz, this thing flies great with the little modifications here and there, i do not recommend hot glue on any foam airplane b/c of weight and its not nearly as strong. even though you want this to be an outdoor flyer you still need to keep it likgh b/c you have to figure the equation of the wingloading aginst the weight. although my flighst have been sucuessful and the roll coupling is at a minium. i would suggest to take your time and look things over where you can improve read up on it dont just fly through the instructions and think their perfect. the overall appearence is nice but i also saw some blemishes on the wings, but oh well im into having it fly well i cant see them in the air anyways.