Yes, a rub with steel wool or fine sandpaper will do the trick.
------------- XVI yes?
As well is two words!
How does a sage know everything about everything? or does he? or does he just think he does?
Remember, if you buy something you bought it, not brought it.
Could have been, but make sure you fully remove and clean the towball before towing, otherwise the black protective paint will rub off and assuming you have an Alko stabiliser hitch, will contaminate the friction pads.