I started building the tail feathers of #40637 in January of 2006. I then took a 2 year hiatus to finish the Cozy MKIV I was building and had sold to a friend. After the Cozy MKIV was flying in Phase 2, my buddy came out every weekend on a Saturday to help me finish building the RV-10. The first flight was pretty accidental as I was doing final taxi testing at lower rpm settings due to how fast the RV-10 reaches take-off speed. A little too much back pressure on the stick and she was off the ground. I added full power and as I had expected from my transition training with Alex De Dominicis, 959RV started to climb like a home sick angel. The plane was WAY out of trim but once I was 2500' agl and sticking close to the airport I was able to trim it to fly pretty mush hands off. Some obvious squaks: The airspeed is not reading correctly on the G3X or Dynon screens pegging out at 36-38 knots, and the MP readings dropped to 11" although the engine ran exceptionally well. U used the GPS ground speed to fly and land the plane coming in a little hot for a safety buffer. I flew for .8 hours too feel the plane out and let the engine EGT and CHT readings stabilize. 959RV is officially in Phase 1 and there is obvious trouble shooting to keep me busy in a cold hanger.