I made an impressive lawn dart with the Extra 300 today due to elevator flutter. Didn't hear it. Now I do have a Saito .72 on it which I know is overpowered. I was in a full throttle slight dive. I was having a great time with knife edges and snaps before it happened. My only saving grace was that it plowed in to the tall grass at about a 30 degree angle. Caved in the firewall (which was reinforced), broke one wing and the rudder hinges broke. It is fixable, but just need time and patience. Building or assembly I don't mind, but I hate fixing. . I should have got the 60 size, but it was a gift.

The Question is about wing caps (counter balance). Has anyone modified theirs and what size did you make it. I am hoping it will help with the flutter and I have to remember now to fly full all the time.