I bought a used 2006 Fleetwood Providence. It has been a great coach but has one problem. When I retract the leveling system and wait for all the lights on the control pad to go out and put the coach in gear and proceed down the road it seems everything is fine. Then all of a sudden all the lights on the control panel began to flash and the buzzer goes off, What the heck do i do? I stop and check all the jacks and then start the retract system again. Sometimes it works sometimes it doesn't. I have read the manual and I have followed the instructions to the "T". What am I doing Wrong?