browneyes, sorry for the late reply we have been gone for most of two months to a couple of rallies and then back east on family business. Once we got home we were so busy I zoned out and didn't log on until now.
By pin I am assuming you mean the pin that holds the the hitch shank in the receiver. If that is it it would depend upon if it shows any wear; i.e. is the pin worn diameter down any that would allow the pin to work back and forth in either the shank or the receiver.
IF you were talking about something else give me a description and possibly a picture. You can email it to
kd6uvt@arrl.net since I don't know if you can include pictures in a private message.