Bob, I used thin CA to glue the two pieces together. I could be wrong but I dont' think it was the glue that caused it to twist. The balsa itself had some twists in it. I'm not impressed with the balsa I got. I may try to snap a few shots of it. They are very very minor. Probably talking much less than 1/16".

Did you glue yours up the way the plans show? Or did you run the grains in different directions to help stiffen it and resist warps and twists? Thanks,

sean