Does anyone know how to strengthen the loose neck of eliptical machines? Both allen wrench screws are installed, but when in use, ouir eliptical is a bit wobbly. I'm concerned that if my wife and I continue to use the equipment in this state, soon it will break and become unrepairable. It is about 4 years old and is out of all warrenties. Also, when in use, there is too much play at the two moveable handles, again adding to the clanking and wobbling. Please advise if someone has had these similar problems or has any solutions to what we're going through.