RE: Balsa USA ??
Well, I built the "Citabria Pro", starting with the original kit. Before I really got into it, the kit was re-engineered. I chose to call BUSA and purchase the parts necessary to bring my older model up to current specs.
No major changes, but the the landing gear was moved forwared 1", which was IMO the most significant change. All in all, I can't complain; BUSA was good about sending me the instruction book (new) and the die cut parts that were updated. I do agree, there are a few mistakes on the drawing, however experienced builders will spot them and build accordingly. It's not perfect, but not too bad. I am pleased with the finished product.
DaveB