A buddy has a Pro 4 that he had a fuel leak on. He contacted Jiffy and they sent him a replacement fuel line, but he still could hear a leak, it was leaking in the carb. So he contacted Jiffy again. It turns out that it was out of the 2 year warranty by like 3 weeks, but they are covering it anyway, and sending him a new carb! That's why I have stuck with Jiffy over all of the years. Thanks Jiffy for standing by your product!!!