I filled my tank up like normal and I noticed a strong smell of gas inside the car and thought maybe some splashed on me or it got on my hands. Well turns out the smell continued coming back after I filled my tank so I took out the back seat and noticed a small hair line crack on the fuel level sending unit which is directly behind drivers seat [correct me if I am wrong]. Was curious if anyone has ever replaced one of these and if its extremely difficult or should I just get the part and have my local shop replace it any info would help thank.