[the griff]

I have a problem with cyan streaks across prints from my Epson Stylus Photo 750. If after a period of inactivity (say a week) I print a photo (on photo paper, highest setting), I get a bold strip of cyan ink some 13mm in from the front of the print. Its bold (about half mm wide) and covers the whole width of the print including the margins. Then there may be some more smaller, thinner streaks, sporadically through the rest of the print, some cover the margin (the side next to the Print Head when at rest) and travel across the print. Any more prints I do (on photo paper, highest setting) after the first 'Duffer' are generally OK. The odd one may have a streak on it somewhere. I think I have 'Fluff' or 'paper' connected to a cyan nozzle under the Print Head. It gets charged with ink (through capillary action) during the printers inaction, and then spreads its first bold line across the print on the Print Heads first travels across the page. In all other respects the printer is first class, no nozzles are blocked and highest setting photos have no banding, etc. I have re-installed the printer software and changed the colour cartridge. I am going to but Epson Inkjet cleaning sheets to see if that helps but I think I may have to take the Print Head off to clean under it. Any advice or help out there? I don't really want to go near the printer with a screwdriver if I can help it. I have the Epson exploded diagrams of the printer's parts, components and their numbered descriptions. A big thank you for any advice offered