For some reason my gimbal on the XStar premium stopped working mid flight today. Was working fine up to that point and then became unresponsive to my commands on the dial. When I brought it down the whole camera was shaking like it was trying to move but couldn't. Onscreen it appeared to be going through the full range but there was no actual camera movement. I powered down and tried moving the gimbal by hand. It was a little sticky like there was some obstruction inside and after a bit of working it seemed ok. Went out on another flight and it seemed back to normal. Anybody else had this happen? What did i wreck/repair?