update, I thought I would check the engine thrust angle first. I first made sure the plane was sitting as level as I could get it. Then I used a protractor with the string attached with a nut hanging down. I then put it against a level cabinet to make sure it read zero. Then I put it against the hub & to my suprise it read 4 degrees down thrust, I had to lift the BOTTOM of the protractor to make it level. That seems quite opposite of what the plane was doing in air, any throttle at all it went straight up & I mean any throttle. I guess my next project will be what capinjohn showed in those pictures & try to figure out that method.