Yes I extended the elevator about .300" or so and I increased the throw on high rates.SO now when I fly, I take off on high rates, switch to low for flying, then go back to high for landing. I also moved the CG back about 1/16 to 1/8". This now allows the plane to land with a nice flair and slower that it did on the first flight. This plane is a lot of fun and always draws a crowd. I don't know what it's actual top speed it but it BOOKS! and it will go straight up with a full fuel load. The plane is quite stable.. and I also have a better video of it on YOUTUBE AND you can get a laser cut kit of it from PRECISION CUT KITS