By the way, I forgot to ask SST about his wing tip. I am wondering what is the function of adding a "wingtip" to the wings? Will it make it much more "controllable" or something? Is it something I should consider doing it to my plane now? I did few modifications to the frame, mostly additional bracing to the rear section after seeing how "thin" the balsa sheeting and didnt want to take chances of it coming apart. But I didnt want to "overbuild" it too much on account of weight.

Thanks!
Chuck