LOL...well not to funny! I was working on mine, adjusting the pitch linkage after replacing the rotor head. When I was done, I found this small piece if plastic on the table. Not knowing what it was I set it aside. Later when I plugged in the battery to check my work, and then in the living room floor, I brought it up to speed. Thats when I niticed that something wasn't right. Picking up the blade I noticed that my swash plate was cockeyed. Bingo found what the piece of plastic was for![>:] It was for the backside of the swash plate. The little piece that rides in the channel to keep the swash plate straight. Broke it off flush with the guide channel. A toothpick and some CA fixed that problem