It always flew great, no bad habits although the two ST 40's were overkill, never ahd to fly it on one engine but don't think it would have been a problem. I overstressed it last year by doing one too many snap rolls, and the right wing folded at at J-3 fly-in, should have used CF on the wingspar - here are some pics of some of my other twins and more -

Back to the original question - I used to build about 3 to 4 planes (kits) a month for myself and others. Did it for about 10 years during the 90's. People would ask me how I built so many planes so quick, I would tell them I just sat down and did it. I know that sounds simplistic, but if you convince yourself it is too hard, or you don't have time, it doesn't get done. I once started a kit one day about noon and had it finished ready to fly by 8 that night. Also built 6 Scat Cats (we were club racing them with OS 25's) in three days. At one time enjoyed build as much as flying, but finally got burned out on it after about 10 years.