Zoom lever on my Canon sx530 hs powershot zooms by itself

The zoom lever on my camera has been malfunctioning for several months. The camera was bought June 2015. A few months ago, the zoom-in side became loose and with the slightest touch, it would zoom-in. I learned to adapt to operating the camera with the zoom-in being loose. A couple of weeks ago, the zoom-out became loose. I adapted to that as well. The last two days or so, the zoom lever has gotten wildly loose and zooms in or out by simply movement of the camera itsel:, not even requiring a touch to activate the zoom. How difficult or easy is it to repair this? Where would I get the required parts? I don't know anything about taking apart a camera. Give me an engine and I can repair it. The smallest thing I've ever worked on is a Honda Civic. So I'm mechanically inclined just with automotive and Diesel engines.