Yep, I loved my YS45,toughest,longest lasting little 40 I ever had. The throttle response was perfect due to the carb and regulator. That low end regulator screw on the 45 never gave me any trouble,I just left it flush with the body & it worked. The wing loading factor on larger planes changes even though the numbers go up,I read an article somewhere about that. I know from watching them fly they dont look any worse,the guys that fly them here swear by them(33% & up). The way I feel now,I'm going to fly the Giles(77" wing,12lbs)and Funtana 100X and see how I feel about them. In particular the Giles,if bigger is truly better,I should notice a difference.