Help!!!!!

Ya the gauge is on my pressure regulator right before the carb. I found my tank is wet with fuel like it is seeping from somewhere. My line connecting to my sending unit had what looked like rusty liquid dripping from it, so I replaced it and the clamp, everything is tight under there now. I cleaned up the fuel on the tank so I will be able to tell if that was the issue or if it is the sending unit gasket, which was brand new when I put it on there. Thanks for the help.