RE: Spit build and 1/16th of an inch?
never underestimate the pulling power of glue, thats why on the real thing they use rivets or bolts. IF you can keep the balsa in a relaxed state, youve won the battle,but
how you do it i don't know. its not a perfect science, its going to warp in storage
eventually , sun effects it , moisture ettc. i wouldn't worry about an 8th