HP recommends cleaning the heads on the 14" drives with a flat wand, and a cleaning sleeve that fits over it. -- Tex-wipe made them They're called Tex-Sleeves and are a blue plastic split wands that look like oversided tongue depressors (1" x 6") with a lint free cloth sleeve that slides over that like a sock. The ones I have are in storage, will retreive the part numbers for you. I have extras of the plastic parts, but am running out of sleeves. This is exactly the right thing for cleaning 2315/5440 style upper/lower heads.