Hi Duane, I did not fly at the Detroit Invitationals, I was a spectator, Film maker, Club member, President of Detroit R/C 1964. I had personal contact and knew most of the top pilots on a first name basis. We (The Top R/C pilots) were allexperimentersand were glad to talk about all the newinnovationswe were working on. Jim Kirtland was still in the USAir force, so he and I had a little more camaraderie. Tom Brett was also a Detroit R/C club member and a Jewel of a man. He would bring new and very innovative THINGS he was designing to our model meetings for "Show and Tell". The subject of THRUST positioning. A quick update I graduated as an Aeronautical Engineer, worked at Republic Aviation inHydraulicand Control Engineering section, Flew fighter aircraft in USAF - T-6, T-28, T-33, F-86, T37, F-102, F-106, C-46. C-45. Many thousands of hours of flying time. 225 combat missions in Vietnam, Ejected out of an F-102 in the traffic pattern, Flamed out over Laos at night in TERRIBLE weather, I still hold the world speed record for model airplanes (Mach 1.2), I still share the control line speed record with a "Hellrazor" 149.23 MPH on two .016 control wires. I haveCONTINUOUSLYflown model airplanes for over 50 years. I'm getting off the subject of THRUST. We all can get very BOGGED down in "Torque, P-Factor, Rotational Mass, Accelerations, etc. etc". I came up with a simple set of numbers when I designed my aircraft. I must say first, I don't build Model Airplanes, I build Real Airplanes inMiniature. The numbers I start with are 2 and 2. Two degrees Right and two degrees Down. This allows you to re-trim your engine position slightly without major re-working of the Nose/Spinner area. As for DVDs, I will make a BUNCH and send them to you (NOCHARGE) and you can give them to ever you think would enjoy them. I have attached a few more photos. My 1st place award at the Toledo Conference 1966 for "NewEngineeringIdea" that was working with Foam Bead material. Both R/C airplanes are all foam balsa sheeted. The picture of the 3 guys "Me in the center" was with the "D" size Hellrazor. We were the first model pilots todevelopaluminum engine pans. SORRYFORRAMBLING. Give me a few drinks and I'll talk all night. Col. Chuck Winter.