I have two of the older D & S 5000,s at two different locations. For 9 months I have been very happy with them. For the last two weeks one of them I can only get to work on the first two wash levels; on three & four where the "undercarriage" comes on, the Gantry & everything else moves/works with the flashing of the information board. In other words move a foot stop move a foot stop, etc...I wonder has anyone ever experienced this problem? Please help. Thanks, Dale