The tank is in pretty good shape. There is only some minor rust on the bottom of the tank as you look straight down the filler neck. I have fuel leaking from around the fuel filler neck/cap. This happens when you tilt the machine back, so you can push it around without the blades scraping or hitting the ground when in operation. I got nothing to lose , so I might try giving the carb another clean and double check the fuel pickup screens. Are there any other parts of the carb (besides the diaphragm) that could need replacing?