Stop in for a cup of coffee

Good Evening (your time), looks like you've got a bit going on over there today. I keep getting side tracked, had to do a branches run and some clean up. Finally got to pulling the Duster fuel tank. Have a question about the filler tube, wondering if the tank can (or should be) dropped without removing the whole tube. There's a rubber gasket I thought might slide off of the tube but hanging a little, don't want to force w/o knowing. Found out there's B5 blue up under the tank, that was a surprise, as was it feels and sounds like about a gallon of fuel in there still after at least 6 years not being on road. Here's pics, comments for the newbie please : )

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