I posted a few years ago on the fuel tank in my 270. The tank had been removed by a Cummins dealer to do the fuel lines. Judging from this and other work they did on this rig, it's a pretty sloppy joint. They must have told the caulker to find every tube of silicone he could and make sure the tank was hermetically sealed. Anyhow, I got it cleaned up but didn't get...