The odds are this little doo-hicky will fix 50% of the fork leaks you may experience. Fork leaks are caused by either debris getting past the fork seal scraper or by damage to the fork sliders. All it takes is a piece of grit/dirt to get in the fork seal for a leak to occur. This tool allows you to get inside the seal to pull out any debris. Dirtbike riders have been using them for years.
NOTE: Not recommended of you have ti-nitrided sliders. The fork slider coating on ti-nitrided sliders is delicate.