I used to build kits and assemble ARFs for people but the money part of the deal was all up front unless changes were made as I was building. ARFs were A flat fee for trainers. My own advanced instructor got me into always doing the maiden flights on anything I built or assembled unless I was told not to by the owner. Reason is: at one club the flight instructor did the maiden on one of the planes he built and crashed it. He stated to the owner that the plane was assembled wrong and the CG was way off. It just couldn't be A loose nut on the controls?? Anyway, from that point on we both always did the maiden flight. If we could we did it when the owner of the plane was there so there was no question the plane could fly.
Mike, I just finished assembling A Nitroplanes ARF Extra 330. Due to the Chinglish instructions or lack there of, it is one ARF that would jump up and hurt A first time assembler. Not to mention the missing parts that only A builder would have in there shop.{screws} Outstanding plane as far as flying goes though. I assembled it for A student. JOE!!!! You should take A look at this plane, it's the 90 size {60 to me} and it flew the complete IMAC without A bobble. Powering it with A Saito 100.
Gene