I have a question if you have a Telstar...How do you keep the legs on ? I understand some of the early versions had a screw in each leg, but the 3 I have are just slip on versions. None of them have been abused and look in good overall condition. Is there a trick to keeping the legs on ? One that I have im afraid to put a bottle on it because the legs fall off so easy with just a touch. It seems like they should snap into place but they wont.