My zoom lever spring is broken and the lever clicks.

When I zoom in or out the zoom lever stays at the end positions unless I pull with my finger.

The zoom function still works but its the lever thats busted. I end up with it zooming all the way in or all the way out cause the lever has no responsiveness anymore.

I think its the the spring thats detached or broken.

Can this be repaired or do i need to take it to a shop?