Hi guys,I had my maiden flights today on my Queast 50.125mm at the root is a perfect CG to me.I Needed a little down elevator when inverted,and very little elevator control was needed,I don't fly 3d,just pattern.I also had alot of bubbles in the covering,low,low heat,and rub them out with a wad of cotton or paper towel and sometimes use a pin.I'm using a ttpro46,and my servos are under the wing,If I had put them in the rear I think that I would have had to add alot of nose waight.It did a nice knife edge,needs a little mixing,I forget to try a knife edge loop,but with high rate I think It will do It.I rotated the engine,using a dubro muff ext.and a tower muffler,the top stayed nice and clean,and the CL of the tank is the CL of the carb. Good luck guys.ed