Has any body had a problem galling on the area that contacts the rails. I bought this hitch used and pulled a trailer back from Oregon with it. It performed great with no problems. When I took it apart to get it out of the truck I noticed that the area that sits on the rails was galled. I lubed this thing very well before my trip so I find it hard to believe that it happened on my trip. I contacted the previous owner and he was unaware that it had any galling. Had I noticed this before my trip I would have sent it back. Well, I have ground down the high spots but there are some grooves in it. Does anybody have an Idea to fix this or since I have ground down the high spots will it be OK with a generous helping of grease. Thanks in advance, Wade