I'm not a carb. expert but have had some experience with ebay carb kits. Some of the so called kits are only gaskets with no pumps or new needle valves and the gaskets have been around so long that they are brittle. What ever kit you get I think it a good practice to fill the bowel of the carb with fresh gas and let the gaskets soak for a few mins after reassembly and resnug bolts and screws after it has ran a little.