RE: How does the propeller effect left thrust?
I would like to point out the Top Flite Monokote add on the inside front cover of Feb 2004 M.A.N. It shows Chip Hyde's Ultimate. Notice the pronounced right thrust in the engine. Realizing that Chip is one of the best and knowing that he is extremely proficient with the rudder, he still puts in right thrust to make the plane fly right.
Geistware, I realize that you don't like to fool with the engine, I don't either, but the place to start is with about 2 degrees of right thrust. Of course the rear of the engine will need to be moved left to make the prop come out in the right place. Yes, it's a lot of trouble but it has to be done if you want your plane to fly right.
I've done a lot of giant scale scratch building (from plans) in the past 20 years and I am still amazed that most of the major designers never mention right or down thrust. I would sure hate to fly my Z Corsair without right thrust. Trust me, I would have a bear by the tail.
Ken