Presently I have one that has been flying for approximately 18 months with no problems. One of the easiest if not the easiest to fly P-51s available. I personally do not like the mechanical gears but once set up they have worked quite well. Tracks and flies very well on 8 cells. Landings with partial or full flaps are no problems. It needs larger wheels but thats understandable. Everything fit and there were no problems noted during assembly. Sig had done this one right. ed