I know exactly what you are talking about..I had to replace my fuel lines from cloth to Rubber because they were leaking. The one directly from the tank is MB manufactured you have to order that...The other flex cloth line can be replaced but it just needs clamps from the rod to rod. I dont know the the diameters or whether it was tapered or not. I took to a garage to replace that...I didnt want to deal with the fuel everywhere.