Gas tank leak

I had a few leaks at the fuel senders on several Mopars. Usually because the lock ring wasn't tight enough. Rather than make a thicker gasket, try bending the 3 ears out more. Make sure everything is perfectly clean and no rust. Coat the gasket w/ kerosine or mineral spirits to help it slide. There is a special tool for installing the lock ring that isn't expensive (~$7?). I'll have to get it and stop using a screwdriver and hammer.

It is hard to install it correct with the tank on the car, especially since you should tap the lock ring evenly at all 3 ears to get it centered. Removing the tank is easy if you use up the gas first. That yields other benefits like fixing rust and blowing it out.