When I began removing the drain plug in left hub of my Kubota KX41-3 excavator to change the oil in the track drive motors, the entire hub rotated. The other side didn't. I had a heck of a time wedging the hub so I could get the drain plug out. When I called the dealer the mechanic simply said "sometimes that happens". He didn't seem to think it was a problem. Does anyone know if that can lead to problems in the future. For example leakage around the hub? Thanks.