Our new to us PUP sits perfectly level with a 5 1/4" drop on my wife's Yukon. Luckily my father in law had an old one that he had no idea where it had come from. The thing is a little rusty, but no big deal, I figured I would clean it up and pit a new ball on. BUT the shaft that goes into the hitch has some rust pits (not all the way through by any means). I know this thread is useless without a picture, and I can get one tonight. What are your thoughts, should I sand the rust down and paint this drop hitch, or just trash it and get a new one? My pup weighs less than 2000lbs, but I want to be safe with it on the road. No cracks or anything.