fuel

I have no experience with using this type of product and was wondering if those who have used it would be prepared to share their experiences - good and bad?

Has anyone taken apart the new style British-made fuel taps? Are they the cone brass type like the original taps? Or do they have any rubber and plastic inside to fail with today's Ethanol-laced gasoline? I have an attached garage and when storing the bikes I remove fuel from tanks to...