delonghi coffee maker

[hentellus]

I need to replace a washer on the steamer tap of my coffee maker. However, I can't get the lid off to get at the washer. I need a specialist tool: basically a very narrow diameter "screwdriver" type tool, but with a small nut socket on the end to undo the nuts that hold down the lid. They are 2 or 3 cm down a narrow cylinder. Coffee maker now virtually useless for want of a washer. Makers won't reply to my questions.