When DB left World, he immediately started flying Futaba. Now this is as far as I remember, and do not remember the years. I left World in 1969, got married. I think I am right here. If Dave had this Tipo at his house, the last time I was there, I am sure he would have pulled it out and showed it. At that time, he was building a full scale 'One Design', just waiting on the powerplant. I was up there two years ago, had dinner with Dave, Sally and some other flying buddy's from those day's. If he had a Tipo for sale, some of us would have known about it. Mike M. or Tony F. may be able to put some solid info in here.