I RECENTLY ACQUIRED A MINT 1957 7.5 EVINRUDE FLEETWIN. UN FORTUNATLEY THE TANK THAT CAME WITH THE MOTOR IS VERY DIRTY INSIDE. WHAT IS THE BEST METHOD TO CLEANING IT AND ARE THE PARTS AVAILABLE TO REBUILD THESE TANKS. I'M LOOKING FOR A NEW FITTING TO CONNECT IT TO THE MOTOR,ABOUT 6FT OF DUAL LINE AND PARTS TO REBUILD THE TANK AND THE PRESSURE PUMP. THANKS IN ADVANCE<br /> TOMMY STEVENSON