Before I print with my Epson F2100 I go through the nozzle check and do a light or medium head cleaning on the whites only. Now I get the dreaded suction cap error message on both light and medium cleaning but I am ok with a heavy head cleaning. I have done the prescribed maintenance but no change. The manual does say if this continues to call Epson but I know where this will lead and before I take that step I would like to understand how the suction cap works with the print head. Anyone have a clue how the system works? Thanks and I know I am not alone with this issue so someone must have paid the Epson ransom or figured it out them self.