took the first flight today, and was very impressed with the plane. Made a slight whisteling noise; must be due to the airframe. I am flying a 1.60 DZ and I don't think I went above 1/2 throttle. This is a very impressive engine. The shake and rattle of the 1.40 is lost on the 1.60. The engine is really smooth. My CG is located a 1/4 inch behind the wing bolts. This postion I think for me will work out very well. Down lines were very strait no mix. my setup is wings at .25+ stab at 0 degrees. Will put some more flights on it in the cming days and let you know what else I find out.