I have made that mistake recenlty. I had put together a brand new 90 size heli and had only one hover on it. I wasn't going to bring it to the field because i wanted to check it out a little more before i flew it again. Well my dad drives over to the house and sees that i wasn't going to bring it. After listening to him go on and on about how he wanted to see it fly i went and grabed it. Well at takeoff all was great. I didn't do any 3d with it just slow loops and rolls. Well, guess what ,something had come loose causing one blade to flutter then fold up. Now i have $3000 falling from 100ft. The kit was almost a total loss. You can bet i'll never again go agaist my better judgment again. I've always been that type that will not fly until I and only I am ready. For some reason i just let it go that day.