I have a customer that came in for service. He says his slide out isn’t coming in right. It will start and stop start again and stop. He said one side goes but not the othe. He had to help by pushing it in. I asked if his battery was good and he says yes. So my tech looked at it and says it ran fine several times in a row. He is not accepting that answer. Is there anything that could be causing this other than a battery issue?