No, the water pump is a perfect fit. It looks like when they stamped out the gasket it must have shifted just a bit. I didn't have any gasket material so I just tried some gasket maker by permatex. I filled it up yesterday and let it run until the engine got hot. No leaks. I also added some radiator flush and put a new fan belt on. If this little tractor over heats now I am at a loss. I hope to use it a little bit this weekend and see if I can get it good and hot. I can't see any reason why the other water pump would be bad, it seems to be in perfect shape. The fan belt was in pretty rough shape and possibly the radiator was plugged just a bit.