Slow, Driving Rustoration 1972 Dart

Smell t gas and if bad just drop the tank and clean it out best you can. Make sure the pickup tube is open. Doubt parts store will carry the sock for it.
Life is an adventure! I have made it that far on a wish and a prayer. Prayer is important.
Seems like my carb problems in your case can be a stucking float.

Sounds good maybe I won't bother with taking a new tank. Perhaps just a pickup instead. If it's just a bowl that would be great. I may still take a new carb just incase, plus shiny new things are fun!