I have an 83' 500sl. I had a leak where the fuel line connects to the fuel pump. I replaced the copper seals and that corrected the problem. A couple of days later I filled the fuel tank for the first time. The next day I noticed a strong gas smell in the car. I then found gasoline on the floor in the garage very near the location that the leak in the fuel line caused. Upon inspection, I found the gas to be coming through the rubber grommet that the electric connections for the fuel pump pass thru. Would this be consistant with the expansion tank leak?