Although it took over 160 hours to build, the kit went together without any issues. This was my first kit in 18 years (and my how the kits have changed!) but I just followed the instructions and had no issues. The C/G was bang on and after 10+ flights, I have her dialed pretty well. After learning on the NextStar and solo'ing this summer, the Extra was my second plane choice and I am having a ball with it.