Let me think, drive a car that requires continuous maintainance and cleaning of the fuel tank, or drive a perfectly reliable car which doensn't constantly plague me and my bank account with problems?
I think I will go with the second option.
How can you justify having to remove everything to clean it?
It is a bad design and you shouldn't have to go through that at all!
Time consuming? Yes.
Time is money, yes?
Ford screwed up the design, yes.
Maybe Ford should pay you for the time it takes you to clean the gas tank which is subject to a problem through a design flaw.
Best thing I did for peace-of-mind is sell my Focus, one less thing I have to worry about.