I Am using a Robin industries fifth for some reason this season the lock will not slide in or out I pulled a part as much as I could and cleaned and degreased everything and lubed everything up with some silicon spray. It seems when you pull the handle out the lock gets jammed and won't slide this past weekend I actually resorted to using a piece of firewood to get the fifth wheel to operate. I had to beat on the handle to get it to open. Any one else with this hitch have this problem. I am also having a problem locating a website for robin industries any help appreciated thanks Tom