Gently pull tip straight out to remove it from pen.
Place tip in cup of warm/hot water for up to 30 minutes to soften glue.
Rinse tip thoroughly under running water.
Set tip aside to air dry.
Insert dry tip back into pen, and prime it by depressing for up to 30 seconds or until glue begins to flow through tip again. In the meantime, use the extra tip included in the package.