Went in one day to look around, kind of asked about the helicopters the lady was not helpful at all and pretty much ignored me as if I didnt belong there. She also told me these were "complex" and that was the end of our conversation. I guess tinkering with these little toys is harder than working on real helicopters....... Gave me a chuckle as I left. Too bad I probably wouldve bought something if I could have got some help. Would put zero but 1 is as low as I can go. Needless to say, Ill never go back.