Hello again, and good news.Finally my Richmodel Long EZ 160 flew as expected by changing the angle of engine power line, raising the lower part of the engine mount(using some washers) up to 4 degrees.You can take a look at the video I took at youtube.com, then seach as: long ez 160.With the OS MAX 160FX and a 3-blade MA 16x10 propeller, this model is very fast and with good response; In the video as soon a left the ground just a few feet, I reduced the engine power a bit less than half throtle an see how it flies.

Thanks all for your advises, best wishes: Schaye G.

P.D.: Now just a couple of days left for my new project to arrive: The World Models Spitfire Giant Scale!