My zoom/tele seems to have an issue. When I zoom in on an object it
keeps going after I realse the button, then I can't tele out.

It is almost acting if it is automated or something, but sometimes it
just zooms in all the way and is stuck there for 30sec to a minute, I
can't do anything?

Any clues what might be causing this or something I can troubleshoot
this with?