How do you get the wiper blade linkage off the motor to stay on the little ball?

It sounds like the socket is damaged and needs to be replaced. They usually just snap on and fit tightly, if they pop of easily it is worn or damaged.Have you called the dealer to see how much a new linkage costs? There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online