I got a tank of bad gas in my 74 Bronco, don't know yet if it's just water/moisture or some crud from the bottom of the inground tank at the gas station. What do you guys suggest to clear this up? I plan on emptying the tank, and blowing out the fuel lines, and installing new fuel filter, but should I drop the tank and clean the inside of it as well? It has the factory rear tank on it.