I mixed Flamemaster from Vans for the first time today to seal and attach the fuel cap receptacles, drains, and a few other parts to the inboard ribs.
Using a gram scale to get the ratio right, 102 grams was used in 3 batches or about 12% of one quart. At that rate I think it will take a bit more than one quart to do both tanks. It sure is messy business. This is my first shot at this process so I am using the stuff liberally, like under the plate nuts not just around them. I am not concerned about cosmetics inside the tank so no MEK wipe down there.