You might find spraying cleaner will not help.
Better to use very fine emery cloth between the points, then drag a folded
piece of campaign literature through it to clean the minute crud that is left from the Emery.
I mentioned campaign literature because we all seem to have enough to fill a large garbage bag with it.
Myself, I have several diamond dusted/coated point files. but most do not have them and I doubt they are even available in todays pointless electronics.
