Large slide jumping gear when gong in or out

[cwestl]

OK we went on a long weekend trip and when we extended our Kitchen slide it tried to go out but only one side would go out even. I checked and the gear on the hydraulic cylinder side was jumping or skipping. My camper is a 2015 3711FL. Has this happened to anyone else and what is the fix? I can help the other side and get the slice in or out, so I don't think the slide is jammed, I can move it by hand.