Thru the course of summer camping on 3 occasions, the slide out on our Lance travel trailer stopped half way in, with the. ‘In’ switch still pressed, backed it back out a little each time and retried the ‘in’ switch, then the slide out came in the rest of the way, no problem. Camper is always sitting level with the support jacks down. Even though it corrected itself each time, it makes one a little nervous.