Just one note of caution. When working around fuel systems be careful of sparks.
Catastrophies are very rare, but having seen one in a garage I worked in many years ago ...
I never want to see another one.
I have a piece of brass rod that I use when I need to "persuade" something tied into a fuel system.
Copper and alloys containing copper (brass, bronze, Monel metal (copper-nickel alloy), copper-aluminum alloys (aluminum bronze), are all non-sparking. A hunk of copper water supply pipe can usually be found without much trouble.
I'll be the first to say that the risk is very small, but if the tank went boom it would really screw up the rest of your day