Get yourself a can of carb cleaner from Halfrauds, a rake of cotton buds, and a spare half hour. It really is a piece of pish to do. I do mine every 6 months just to keep on top of it. The first time I did it, I dont think it had ever been done before that. Went for a drive when I was finished and I was shocked by the difference. So much more responsive, and far smoother. Get it done!